labelmaker: Make label size configurable at runtime

SHORT_HOST is a new option that lets you specify which of the allowed
hosts to use for inventory QR codes

.envrc

@@ -0,0 +1 @@
+eval "$(lorri direnv)"

.gitignore

@@ -10,3 +10,4 @@ postgres-hstore/
 .ropeproject/
 docker-compose.override.yml
 build_static
+*.egg-info

Dockerfile

@@ -1,11 +1,13 @@
-FROM python:3.5.9@sha256:3a71fd2dac2343263993f4ab898c9398dfbfd0235dafe41e784876b69bdfa899
+FROM python:3.8
 ENV PYTHONUNBUFFERED 1
 RUN mkdir /code
 WORKDIR /code
-ADD requirements.txt /code/
-RUN pip install --no-cache-dir -r requirements.txt
+ADD pyproject.toml /code
+ADD poetry.lock /code
+RUN pip install poetry --no-cache-dir
+RUN poetry install
 RUN wget https://github.com/vishnubob/wait-for-it/raw/8ed92e8cab83cfed76ff012ed4a36cef74b28096/wait-for-it.sh -O /usr/local/bin/wait-for-it && chmod +x /usr/local/bin/wait-for-it
-ADD . /code/
-RUN python manage.py collectstatic
+ADD . /code
+RUN poetry run ./manage.py collectstatic
 
-CMD bash -c "python manage.py migrate && python manage.py runserver 0.0.0.0:8000"
+CMD bash -c "poetry run python3 ./manage.py migrate && poetry run python3 ./manage.py runserver 0.0.0.0:8000"

Dockerfile.nixified

@@ -0,0 +1,49 @@
+# syntax = docker/dockerfile:1.2
+FROM nixos/nix as nix-base
+
+ENV PYTHONUNBUFFERED 1
+RUN nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgs && \
+    nix-channel --update
+
+WORKDIR /code
+
+RUN wget https://github.com/vishnubob/wait-for-it/raw/8ed92e8cab83cfed76ff012ed4a36cef74b28096/wait-for-it.sh -O /usr/local/bin/wait-for-it.sh && chmod +x /usr/local/bin/wait-for-it.sh
+
+RUN nix-env -iA nixpkgs.git nixpkgs.bash nixpkgs.coreutils
+
+ADD ./nix ./nix
+ADD ./spejstore.nix .
+ADD ./labelmaker/*.nix ./labelmaker/
+ADD ./labelmaker/Gemfile* ./labelmaker/
+ADD ./poetry.lock .
+ADD ./pyproject.toml .
+
+FROM nix-base as spejstore
+
+RUN touch spejstore.py # poetry must think there's a module, so we mock a trivial one
+RUN nix-env -if spejstore.nix
+RUN rm spejstore.py
+
+ADD *.env .
+ADD *.py .
+ADD auth ./auth
+ADD dist ./dist
+ADD python-modules ./python-modules
+ADD spejstore ./spejstore
+ADD static ./static
+ADD storage ./storage
+ADD templates ./templates
+
+RUN nix-env -if ./spejstore.nix 
+
+CMD /usr/local/bin/wait-for-it.sh db:5432 && manage-py migrate && \
+    manage-py runserver 0.0.0.0:8000
+
+FROM nix-base as labelmaker
+RUN nix-env -if ./labelmaker/default.nix
+
+ADD labelmaker labelmaker
+RUN nix-env -if ./labelmaker/default.nix
+
+ENV LPR_PRINTER_NAME=fake-printer
+CMD labelmaker

common-deps.nix

@@ -0,0 +1,6 @@
+{ sources ? import ./nix/sources.nix, pkgs ? import sources.nixppkgs {} }:
+with pkgs;
+[
+  git
+  postgresql
+]

default.nix

@@ -0,0 +1,10 @@
+{ sources ? import ./nix/sources.nix
+, poetry2nix-olay ? import
+    # ../poetry2nix/overlay.nix
+    "${sources.poetry2nix}/overlay.nix"
+, nixpkgs ? sources.nixpkgs
+}:
+{
+  manage-py = import ./spejstore.nix { inherit sources; };
+  labelmaker = import labelmaker/default.nix { inherit sources; };
+}

docker-compose.dev-override.yml

@@ -1,6 +1,11 @@
-version: "3"
+version: "3.4"
 services:
   web:
     environment:
       - SPEJSTORE_ENV=dev
-      - SPEJSTORE_ALLOWED_HOSTS=localhost,127.0.0.1
+      - SPEJSTORE_ALLOWED_HOSTS=web,localhost,127.0.0.1
+      - SPEJSTORE_LABEL_API=http://labelmaker:4567
+      - SPEJSTORE_SHORT_HOST=web
+  labelmaker:
+    environment:
+      LPR_CMD_PATH: "true"

docker-compose.prod-override.yml

@@ -1,4 +1,4 @@
-version: "3"
+version: "3.4"
 
 services:
   db:

docker-compose.yml

@@ -1,15 +1,16 @@
-version: "3"
+version: "3.4"
 services:
   db:
     build: postgres-hstore
     restart: always
     environment:
      - POSTGRES_HOST_AUTH_METHOD=trust
-
   web:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile.nixified
+      target: spejstore
     restart: always
-    command: bash -c "python manage.py migrate && python manage.py runserver 0.0.0.0:8000"
     volumes:
       - .:/code
     ports:
@@ -20,3 +21,14 @@ services:
       - SPEJSTORE_CLIENT_ID
       - SPEJSTORE_SECRET
       - SPEJSTORE_ENV
+  labelmaker:
+    build:
+      context: .
+      dockerfile: Dockerfile.nixified
+      target: labelmaker
+    depends_on:
+      - web
+    ports:
+      - "4567:4567"
+
+

labelmaker/.editorconfig

@@ -0,0 +1,12 @@
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+
+[*.rb]
+indent_style = spaces
+indent_size = 2

labelmaker/.gitignore

@@ -0,0 +1,2 @@
+.bundle
+vendor

labelmaker/Gemfile

@@ -0,0 +1,10 @@
+source 'https://rubygems.org'
+
+gem 'prawn'
+gem 'prawn-qrcode', :git => 'https://github.com/jabbrwcky/prawn-qrcode'
+gem 'prawn-svg'
+gem 'sinatra'
+gem 'color'
+gem 'excon'
+gem 'rmagick'
+gem 'json'

labelmaker/Gemfile.lock

@@ -0,0 +1,61 @@
+GIT
+  remote: https://github.com/jabbrwcky/prawn-qrcode
+  revision: 08e457af2d6661ede3346a3a3dc3b99a9df9fd9b
+  specs:
+    prawn-qrcode (0.5.1)
+      prawn (>= 1)
+      rqrcode (>= 1.0.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    chunky_png (1.3.11)
+    color (1.8)
+    css_parser (1.7.1)
+      addressable
+    excon (0.73.0)
+    json (2.3.0)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
+    pdf-core (0.7.0)
+    prawn (2.2.2)
+      pdf-core (~> 0.7.0)
+      ttfunk (~> 1.5)
+    prawn-svg (0.30.0)
+      css_parser (~> 1.6)
+      prawn (>= 0.11.1, < 3)
+    public_suffix (4.0.5)
+    rack (2.2.2)
+    rack-protection (2.0.8.1)
+      rack
+    rmagick (4.1.2)
+    rqrcode (1.1.2)
+      chunky_png (~> 1.0)
+      rqrcode_core (~> 0.1)
+    rqrcode_core (0.1.2)
+    ruby2_keywords (0.0.2)
+    sinatra (2.0.8.1)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.8.1)
+      tilt (~> 2.0)
+    tilt (2.0.10)
+    ttfunk (1.6.2.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  color
+  excon
+  json
+  prawn
+  prawn-qrcode!
+  prawn-svg
+  rmagick
+  sinatra
+
+BUNDLED WITH
+   2.1.4

labelmaker/README.md

@@ -0,0 +1,14 @@
+# spejstore-labelmaker
+
+```sh
+bundle install
+bundle exec ruby main.rb
+```
+
+try it out:
+
+GET http://localhost:4567/api/1/preview/:label.png
+GET http://localhost:4567/api/1/preview/:label.pdf
+POST http://localhost:4567/api/1/print/:label
+
+where :label is a `spejstore` label.id or item.short_id

labelmaker/common-deps.nix

@@ -0,0 +1,7 @@
+{ sources ? import ./nix/sources.nix, pkgs ? import sources.nixpkgs {} }:
+with pkgs;
+[
+  cups
+  pkg-config
+  imagemagickBig
+]

labelmaker/default.nix

@@ -0,0 +1,32 @@
+{ sources ? import ../nix/sources.nix
+, nixpkgs ? sources.nixpkgs
+, common-deps ? import ./common-deps.nix { inherit sources; }
+}:
+let
+  pkgs = import nixpkgs {};
+  ruby = pkgs.ruby;
+  env = pkgs.bundlerEnv {
+    name = "labelmaker-env";
+    gemdir = ./.;
+    gemConfig.rmagick = attrs: {
+      buildInputs = common-deps;
+    };
+    buildInputs = common-deps;
+    inherit ruby;
+  };
+  src-drv = pkgs.stdenv.mkDerivation {
+    name = "labelmaker-src";
+    src = ./.;
+    nativeBuildInputs = common-deps ++ [ env ];
+    installPhase = ''
+      mkdir -p $out/share
+      cp -r . $out/share
+    '';
+  };
+
+  script = pkgs.writeScriptBin "labelmaker" ''
+    #!/bin/sh -e
+    ${env}/bin/bundle exec ${ruby}/bin/ruby ${src-drv}/share/main.rb
+  '';
+in
+script

labelmaker/gemset.nix

@@ -0,0 +1,223 @@
+{
+  addressable = {
+    dependencies = ["public_suffix"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1fvchp2rhp2rmigx7qglf69xvjqvzq7x0g49naliw29r2bz656sy";
+      type = "gem";
+    };
+    version = "2.7.0";
+  };
+  chunky_png = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "124najs9prqzrzk49h53kap992rmqxj0wni61z2hhsn7mwmgdp9d";
+      type = "gem";
+    };
+    version = "1.3.11";
+  };
+  color = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "10kgsdy86p72q6cf2k92larmbjc0crvd5xq7hy919zm8yvn1518a";
+      type = "gem";
+    };
+    version = "1.8";
+  };
+  css_parser = {
+    dependencies = ["addressable"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "04c4dl8cm5rjr50k9qa6yl9r05fk9zcb1zxh0y0cdahxlsgcydfw";
+      type = "gem";
+    };
+    version = "1.7.1";
+  };
+  excon = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1zvphy60fwycl6z2h7dpsy9lgyfrh27fj16987p7bl1n4xlqkvmw";
+      type = "gem";
+    };
+    version = "0.73.0";
+  };
+  json = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0nrmw2r4nfxlfgprfgki3hjifgrcrs3l5zvm3ca3gb4743yr25mn";
+      type = "gem";
+    };
+    version = "2.3.0";
+  };
+  mustermann = {
+    dependencies = ["ruby2_keywords"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ccm54qgshr1lq3pr1dfh7gphkilc19dp63rw6fcx7460pjwy88a";
+      type = "gem";
+    };
+    version = "1.1.1";
+  };
+  pdf-core = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "19llwch2wfg51glb0kff0drfp3n6nb9vim4zlvzckxysksvxpby1";
+      type = "gem";
+    };
+    version = "0.7.0";
+  };
+  prawn = {
+    dependencies = ["pdf-core" "ttfunk"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1qdjf1v6sfl44g3rqxlg8k4jrzkwaxgvh2l4xws97a8f3xv4na4m";
+      type = "gem";
+    };
+    version = "2.2.2";
+  };
+  prawn-qrcode = {
+    dependencies = ["prawn" "rqrcode"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      fetchSubmodules = false;
+      rev = "08e457af2d6661ede3346a3a3dc3b99a9df9fd9b";
+      sha256 = "134jf2273zn4m3dfjg5m00pxspz4adsfia0062vkhcw5rnvqa4xi";
+      type = "git";
+      url = "https://github.com/jabbrwcky/prawn-qrcode";
+    };
+    version = "0.5.1";
+  };
+  prawn-svg = {
+    dependencies = ["css_parser" "prawn"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0df3l49cy3xpwi0b73hmi2ykbjg9kjwrvhk0k3z7qhh5ghmmrn77";
+      type = "gem";
+    };
+    version = "0.30.0";
+  };
+  public_suffix = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0vywld400fzi17cszwrchrzcqys4qm6sshbv73wy5mwcixmrgg7g";
+      type = "gem";
+    };
+    version = "4.0.5";
+  };
+  rack = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "10mp9s48ssnw004aksq90gvhdvwczh8j6q82q2kqiqq92jd1zxbp";
+      type = "gem";
+    };
+    version = "2.2.2";
+  };
+  rack-protection = {
+    dependencies = ["rack"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1zyj97bfr1shfgwk4ddmdbw0mdkm4qdyh9s1hl0k7accf3kxx1yi";
+      type = "gem";
+    };
+    version = "2.0.8.1";
+  };
+  rmagick = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0ajn6aisf9hh3x5zrs7n02pg5xy3m8x38gh9cn7b3klzgp3djla5";
+      type = "gem";
+    };
+    version = "4.1.2";
+  };
+  rqrcode = {
+    dependencies = ["chunky_png" "rqrcode_core"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "06lw8b6wfshxd61xw98xyp1a0zsz6av4nls2c9fwb7q59wb05sci";
+      type = "gem";
+    };
+    version = "1.1.2";
+  };
+  rqrcode_core = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "071jqmhk3hf0grsvi0jx5sl449pf82p40ls5b3likbq4q516zc0j";
+      type = "gem";
+    };
+    version = "0.1.2";
+  };
+  ruby2_keywords = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "17pcc0wgvh3ikrkr7bm3nx0qhyiqwidd13ij0fa50k7gsbnr2p0l";
+      type = "gem";
+    };
+    version = "0.0.2";
+  };
+  sinatra = {
+    dependencies = ["mustermann" "rack" "rack-protection" "tilt"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0riy3hwjab1mr73jcqx3brmbmwspnw3d193j06a5f0fy1w35z15q";
+      type = "gem";
+    };
+    version = "2.0.8.1";
+  };
+  tilt = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0rn8z8hda4h41a64l0zhkiwz2vxw9b1nb70gl37h1dg2k874yrlv";
+      type = "gem";
+    };
+    version = "2.0.10";
+  };
+  ttfunk = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "0w0bjn6k38xv46mr02p3038gwk5jj5hl398bv5kr625msxkdhqzn";
+      type = "gem";
+    };
+    version = "1.6.2.1";
+  };
+}

labelmaker/main.rb

@@ -0,0 +1,156 @@
+# coding: utf-8
+require 'rubygems'
+require 'sinatra'
+require 'rqrcode'
+require 'prawn'
+require 'prawn/measurements'
+require 'prawn/qrcode'
+require 'prawn-svg'
+require 'color'
+require 'excon'
+require 'rmagick'
+require 'json'
+require 'zlib'
+
+include Prawn::Measurements
+
+# module Prawn
+#   module Text
+#     module Formatted #:nodoc:
+#       # @private
+#       class LineWrap #:nodoc:
+#         def whitespace()
+#           # Wrap by these special characters as well
+#           "&:/\\" +
+#           "\s\t#{zero_width_space()}"
+#         end
+#       end
+#     end
+#   end
+# end
+
+module Excon
+  class Response
+    def json!()
+      # Convenience function
+      JSON.parse(body)
+    end
+  end
+end
+
+# name -> height, width in millimeters
+LABEL_SIZES = {
+  "11354" => [32 , 57],
+  "99012" => [89 , 36],
+  "zebra_large" => [100 , 60],
+}
+
+LABEL_SIZE= ENV['LABEL_SIZE'] || "11354"
+
+if !LABEL_SIZES[LABEL_SIZE]
+  abort("Bruh moment - not printing, undefined LABEL_SIZE=#{LABEL_SIZE} fails to match any of\n#{LABEL_SIZES}")
+end
+
+LPR_CMD_PATH = ENV['LPR_CMD_PATH'] || 'lpr'
+LPR_PRINTER_NAME = ENV['LPR_PRINTER_NAME'] || 'DYMO_LabelWriter_450'
+
+def render_identicode(data, id, extent)
+  pts = [[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]
+
+  4.times do |n|
+    color = Color::HSL.from_fraction((id % 6) / 6.0, 1.0, 0.3).html[1..6]
+    id /= 6
+
+    save_graphics_state do
+      soft_mask do
+        fill_color 'ffffff'
+        polygon = [pts[n], [0.5, 0.5], pts[n+1]].map{ |v| [v[0]*bounds.height, v[1]*bounds.height] }
+        fill_polygon(*(polygon))
+      end
+
+      print_qr_code data, stroke: false,
+                          extent: extent, foreground_color: color,
+                          pos: [bounds.left, bounds.top]
+    end
+  end
+
+  fill_color '000000'
+end
+
+DYMO_11354_LABEL_SIZE = [32, 57]
+DYMO_LABEL_SIZE = [89, 36]
+ZEBRA_LABEL_SIZE = [100, 60]
+
+def render_label(name, qr_text, metadata_text, size: LABEL_SIZES[LABEL_SIZE])
+  portrait = size[0] > size[1] # Decide if which orientation prints horizontally on the label
+  pdf = Prawn::Document.new(:page_layout => portrait ? :portrait : :landscape, page_size: size.map { |x| mm2pt(x) },
+                            margin: [2, 2, 2, 6].map { |x| mm2pt(x) }) do
+    base_dir = File.dirname(__FILE__)
+    font_families.update("DejaVuSans" => {
+      normal: base_dir + "/fonts/DejaVuSans.ttf",
+      italic: base_dir + "/fonts/DejaVuSans-Oblique.ttf",
+      bold: base_dir + "/fonts/DejaVuSans-Bold.ttf",
+      bold_italic: base_dir + "/fonts/DejaVuSans-BoldOblique.ttf"
+    })
+  
+    font 'DejaVuSans'
+
+    # Width of right side
+    qr_size = [bounds.height / 2, 27].max
+
+    # Right side
+    bounding_box([bounds.right - qr_size, bounds.top], width: qr_size) do
+      print_qr_code qr_text, stroke: false,
+        foreground_color: '000000',
+        extent: bounds.width, margin: 0, pos: bounds.top_left
+
+      text_box metadata_text,
+        at: [bounds.right - qr_size, -7], size: 8, align: :right, overflow: :shrink_to_fit
+    end
+
+    # Left side
+    bounding_box(bounds.top_left, width: bounds.width - qr_size) do
+      text_box name,
+        size: 40, align: :center, valign: :center, width: bounds.width-10,
+        inline_format: true, overflow: :shrink_to_fit, disable_wrap_by_char: true
+    end
+  end
+
+  pdf.render
+end
+
+set :bind, '0.0.0.0'
+
+before do
+  request.body.rewind
+  @json_payload = JSON.parse request.body.read
+
+  # Validate and make available from all handlers
+  @name = @json_payload["name"] || halt(400, "Request JSON needs a 'name' field")
+  @qr_text = @json_payload["qr_text"] || halt(400, "Request JSON needs a 'qr_text' field")
+  @meta_text = @json_payload["meta_text"] || ""
+end
+
+post '/api/1/render/pdf' do
+  
+  headers["Content-Type"] = "application/pdf; charset=utf8"
+  render_label(@name, @qr_text, @meta_text)
+end
+
+post '/api/1/render/png' do
+  headers["Content-Type"] = "image/png"
+  img = Magick::ImageList.new()
+  img = img.from_blob(render_label(@name, @qr_text, @meta_text)){ self.density = 200 }.first
+  img.format = 'png'
+  img.background_color = 'white'
+  img.to_blob
+end
+
+post '/api/1/print' do
+  temp = Tempfile.new('labelmaker')
+  temp.write(render_label(@name, @qr_text, @meta_text))
+  temp.close
+  cmd = "#{LPR_CMD_PATH} -P #{LPR_PRINTER_NAME} '#{temp.path}'"
+  system(cmd) || puts("Bruh moment (not printing) - running `#{cmd}` failed")
+
+end

manage.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 import os
 import sys
 

nix/poetry2nix-olay.nix

@@ -0,0 +1,18 @@
+self: super: {
+
+  # p2self & p2super refers to poetry2nix
+  poetry2nix = super.poetry2nix.overrideScope' (
+    p2nixself: p2nixsuper: {
+
+      # pyself & pysuper refers to python packages
+      defaultPoetryOverrides = p2nixsuper.defaultPoetryOverrides.extend (
+        pyself: pysuper: {
+
+          my-custom-pkg = super.my-custom-pkg.overridePythonAttrs (oldAttrs: {});
+
+        }
+      );
+
+    }
+  );
+}

nix/sources.json

@@ -0,0 +1,38 @@
+{
+    "niv": {
+        "branch": "master",
+        "description": "Easy dependency management for Nix projects",
+        "homepage": "https://github.com/nmattia/niv",
+        "owner": "nmattia",
+        "repo": "niv",
+        "rev": "af958e8057f345ee1aca714c1247ef3ba1c15f5e",
+        "sha256": "1qjavxabbrsh73yck5dcq8jggvh3r2jkbr6b5nlz5d9yrqm9255n",
+        "type": "tarball",
+        "url": "https://github.com/nmattia/niv/archive/af958e8057f345ee1aca714c1247ef3ba1c15f5e.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "nixpkgs": {
+        "branch": "nixpkgs-unstable",
+        "description": "Nix Packages collection",
+        "homepage": "",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "870dbb751f4d851a3dfb554835a0c2f528386982",
+        "sha256": "0ydgjvwspfspm0fg7jhc5yxpm47lh4scqhwswranm82hk668cxzl",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/870dbb751f4d851a3dfb554835a0c2f528386982.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "poetry2nix": {
+        "branch": "master",
+        "description": "Convert poetry projects to nix automagically [maintainer=@adisbladis] ",
+        "homepage": "",
+        "owner": "nix-community",
+        "repo": "poetry2nix",
+        "rev": "c6f356183361493bc556138eca452878b651b90c",
+        "sha256": "18zqhwbl0r064xhga9hcwxji7j7xivksdlkl2i8avvzzash715a2",
+        "type": "tarball",
+        "url": "https://github.com/nix-community/poetry2nix/archive/c6f356183361493bc556138eca452878b651b90c.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    }
+}

nix/sources.nix

@@ -0,0 +1,174 @@
+# This file has been generated by Niv.
+
+let
+
+  #
+  # The fetchers. fetch_<type> fetches specs of type <type>.
+  #
+
+  fetch_file = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+      else
+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
+
+  fetch_tarball = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+      else
+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
+
+  fetch_git = name: spec:
+    let
+      ref =
+        if spec ? ref then spec.ref else
+          if spec ? branch then "refs/heads/${spec.branch}" else
+            if spec ? tag then "refs/tags/${spec.tag}" else
+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+    in
+      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
+
+  fetch_local = spec: spec.path;
+
+  fetch_builtin-tarball = name: throw
+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=tarball -a builtin=true'';
+
+  fetch_builtin-url = name: throw
+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=file -a builtin=true'';
+
+  #
+  # Various helpers
+  #
+
+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+  sanitizeName = name:
+    (
+      concatMapStrings (s: if builtins.isList s then "-" else s)
+        (
+          builtins.split "[^[:alnum:]+._?=-]+"
+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+        )
+    );
+
+  # The set of packages used when specs are fetched using non-builtins.
+  mkPkgs = sources: system:
+    let
+      sourcesNixpkgs =
+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
+      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
+      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
+    in
+      if builtins.hasAttr "nixpkgs" sources
+      then sourcesNixpkgs
+      else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
+        import <nixpkgs> {}
+      else
+        abort
+          ''
+            Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+            add a package called "nixpkgs" to your sources.json.
+          '';
+
+  # The actual fetching function.
+  fetch = pkgs: name: spec:
+
+    if ! builtins.hasAttr "type" spec then
+      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
+    else if spec.type == "file" then fetch_file pkgs name spec
+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
+    else if spec.type == "git" then fetch_git name spec
+    else if spec.type == "local" then fetch_local spec
+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then fetch_builtin-url name
+    else
+      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
+
+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
+  # the path directly as opposed to the fetched source.
+  replace = name: drv:
+    let
+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
+    in
+      if ersatz == "" then drv else
+        # this turns the string into an actual Nix path (for both absolute and
+        # relative paths)
+        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+
+  # Ports of functions for older nix versions
+
+  # a Nix version of mapAttrs if the built-in doesn't exist
+  mapAttrs = builtins.mapAttrs or (
+    f: set: with builtins;
+    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
+  );
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+  concatMapStrings = f: list: concatStrings (map f list);
+  concatStrings = builtins.concatStringsSep "";
+
+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+  optionalAttrs = cond: as: if cond then as else {};
+
+  # fetchTarball version that is compatible between all the versions of Nix
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchTarball;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchTarball attrs;
+
+  # fetchurl version that is compatible between all the versions of Nix
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchurl;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchurl attrs;
+
+  # Create the final "sources" from the config
+  mkSources = config:
+    mapAttrs (
+      name: spec:
+        if builtins.hasAttr "outPath" spec
+        then abort
+          "The values in sources.json should not have an 'outPath' attribute"
+        else
+          spec // { outPath = replace name (fetch config.pkgs name spec); }
+    ) config.sources;
+
+  # The "config" used by the fetchers
+  mkConfig =
+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
+    , system ? builtins.currentSystem
+    , pkgs ? mkPkgs sources system
+    }: rec {
+      # The sources, i.e. the attribute set of spec name to spec
+      inherit sources;
+
+      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
+      inherit pkgs;
+    };
+
+in
+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }

poetry.lock

@@ -0,0 +1,583 @@
+[[package]]
+name = "certifi"
+version = "2019.11.28"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "cffi"
+version = "1.14.5"
+description = "Foreign Function Interface for Python calling C code."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+pycparser = "*"
+
+[[package]]
+name = "chardet"
+version = "3.0.4"
+description = "Universal encoding detector for Python 2 and 3"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "cryptography"
+version = "3.4.6"
+description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+cffi = ">=1.12"
+
+[package.extras]
+docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx-rtd-theme"]
+docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
+pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
+sdist = ["setuptools-rust (>=0.11.4)"]
+ssh = ["bcrypt (>=3.1.5)"]
+test = ["pytest (>=6.0)", "pytest-cov", "pytest-subtests", "pytest-xdist", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
+
+[[package]]
+name = "defusedxml"
+version = "0.7.0rc2"
+description = "XML bomb protection for Python stdlib modules"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "django"
+version = "1.11.28"
+description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+pytz = "*"
+
+[package.extras]
+argon2 = ["argon2-cffi (>=16.1.0)"]
+bcrypt = ["bcrypt"]
+
+[[package]]
+name = "django-appconf"
+version = "1.0.3"
+description = "A helper class for handling configuration defaults of packaged apps gracefully."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+django = "*"
+six = "*"
+
+[[package]]
+name = "django-flat-responsive"
+version = "2.0"
+description = "An extension for Django admin that makes interface mobile friendly."
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "django-hstore"
+version = "1.5a0"
+description = "PostgreSQL HStore support for Django"
+category = "main"
+optional = false
+python-versions = "*"
+develop = false
+
+[package.source]
+type = "git"
+url = "https://github.com/djangonauts/django-hstore.git"
+reference = "61427e474cb2f4be8fdfce225d78a5330bc77eb0"
+resolved_reference = "61427e474cb2f4be8fdfce225d78a5330bc77eb0"
+
+[[package]]
+name = "django-markdown2"
+version = "0.3.1"
+description = "This is a simple app, which supplies a single template tag for markdown markup."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+markdown2 = "*"
+
+[[package]]
+name = "django-select2"
+version = "6.3.1-pbr-devdep"
+description = "Select2 option fields for Django."
+category = "main"
+optional = false
+python-versions = "*"
+develop = false
+
+[package.dependencies]
+django-appconf = ">=0.6.0"
+pbr = "*"
+pytest-runner = "*"
+
+[package.source]
+type = "git"
+url = "https://github.com/drozdziak1/django-select2.git"
+reference = "038a763d9caab00be2d583675edf8a87618af5c7"
+resolved_reference = "038a763d9caab00be2d583675edf8a87618af5c7"
+
+[[package]]
+name = "django-tree"
+version = "0.1.0"
+description = "Fast and easy tree structures."
+category = "main"
+optional = false
+python-versions = "*"
+develop = false
+
+[package.dependencies]
+Django = ">=1.8,<1.12"
+
+[package.source]
+type = "git"
+url = "https://github.com/d42/django-tree.git"
+reference = "687c01c02d91cada9ca1912e34e482da9e73e27a"
+resolved_reference = "687c01c02d91cada9ca1912e34e482da9e73e27a"
+
+[[package]]
+name = "djangorestframework"
+version = "3.11.0"
+description = "Web APIs for Django, made easy."
+category = "main"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+django = ">=1.11"
+
+[[package]]
+name = "djangorestframework-hstore"
+version = "1.3"
+description = "Django Rest Framework tools for django-hstore"
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+Django = ">=1.6.11"
+django-hstore = ">=1.3.1"
+djangorestframework = ">=3.1.1"
+psycopg2 = ">=2.4.3"
+
+[[package]]
+name = "idna"
+version = "2.8"
+description = "Internationalized Domain Names in Applications (IDNA)"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "markdown2"
+version = "2.4.0"
+description = "A fast and complete Python implementation of Markdown"
+category = "main"
+optional = false
+python-versions = ">=3.5, <4"
+
+[[package]]
+name = "oauthlib"
+version = "3.1.0"
+description = "A generic, spec-compliant, thorough implementation of the OAuth request-signing logic"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.extras]
+rsa = ["cryptography"]
+signals = ["blinker"]
+signedtoken = ["cryptography", "pyjwt (>=1.0.0)"]
+
+[[package]]
+name = "pbr"
+version = "5.5.1"
+description = "Python Build Reasonableness"
+category = "main"
+optional = false
+python-versions = ">=2.6"
+
+[[package]]
+name = "pillow"
+version = "6.2.1"
+description = "Python Imaging Library (Fork)"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "psycopg2"
+version = "2.8.4"
+description = "psycopg2 - Python-PostgreSQL Database Adapter"
+category = "main"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
+
+[[package]]
+name = "pycparser"
+version = "2.20"
+description = "C parser in Python"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[[package]]
+name = "pyjwt"
+version = "2.0.1"
+description = "JSON Web Token implementation in Python"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+crypto = ["cryptography (>=3.3.1,<4.0.0)"]
+dev = ["sphinx", "sphinx-rtd-theme", "zope.interface", "cryptography (>=3.3.1,<4.0.0)", "pytest (>=6.0.0,<7.0.0)", "coverage[toml] (==5.0.4)", "mypy", "pre-commit"]
+docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
+tests = ["pytest (>=6.0.0,<7.0.0)", "coverage[toml] (==5.0.4)"]
+
+[[package]]
+name = "pytest-runner"
+version = "5.3.0"
+description = "Invoke py.test as distutils command with dependency resolution"
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "pytest-virtualenv", "pytest-black (>=0.3.7)", "pytest-mypy"]
+
+[[package]]
+name = "python3-openid"
+version = "3.2.0"
+description = "OpenID support for modern servers and consumers."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+defusedxml = "*"
+
+[package.extras]
+mysql = ["mysql-connector-python"]
+postgresql = ["psycopg2"]
+
+[[package]]
+name = "pytz"
+version = "2021.1"
+description = "World timezone definitions, modern and historical"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "requests"
+version = "2.22.0"
+description = "Python HTTP for Humans."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+certifi = ">=2017.4.17"
+chardet = ">=3.0.2,<3.1.0"
+idna = ">=2.5,<2.9"
+urllib3 = ">=1.21.1,<1.25.0 || >1.25.0,<1.25.1 || >1.25.1,<1.26"
+
+[package.extras]
+security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)"]
+socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
+
+[[package]]
+name = "requests-oauthlib"
+version = "1.3.0"
+description = "OAuthlib authentication support for Requests."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+oauthlib = ">=3.0.0"
+requests = ">=2.0.0"
+
+[package.extras]
+rsa = ["oauthlib[signedtoken] (>=3.0.0)"]
+
+[[package]]
+name = "six"
+version = "1.15.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
+name = "social-auth-app-django"
+version = "3.1.0"
+description = "Python Social Authentication, Django integration."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+six = "*"
+social-auth-core = ">=1.2.0"
+
+[[package]]
+name = "social-auth-core"
+version = "4.0.3"
+description = "Python social authentication made simple."
+category = "main"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+cryptography = ">=1.4"
+defusedxml = {version = ">=0.5.0rc1", markers = "python_version >= \"3.0\""}
+oauthlib = ">=1.0.3"
+PyJWT = ">=2.0.0"
+python3-openid = {version = ">=3.0.10", markers = "python_version >= \"3.0\""}
+requests = ">=2.9.1"
+requests-oauthlib = ">=0.6.1"
+
+[package.extras]
+all = ["python-jose (>=3.0.0)", "pyjwt (>=1.7.1)", "python3-saml (>=1.2.1)", "cryptography (>=2.1.1)"]
+allpy3 = ["python-jose (>=3.0.0)", "pyjwt (>=1.7.1)", "python3-saml (>=1.2.1)", "cryptography (>=2.1.1)", "defusedxml (>=0.5.0rc1)", "python3-openid (>=3.0.10)"]
+azuread = ["cryptography (>=2.1.1)"]
+openidconnect = ["python-jose (>=3.0.0)", "pyjwt (>=1.7.1)"]
+saml = ["python3-saml (>=1.2.1)"]
+
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+    {file = "Pillow-6.2.1-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:809c19241c14433c5d6135e1b6c72da4e3b56d5c865ad5736ab99af8896b8f41"},
+    {file = "Pillow-6.2.1-cp38-cp38-win32.whl", hash = "sha256:ac4428094b42907aba5879c7c000d01c8278d451a3b7cccd2103e21f6397ea75"},
+    {file = "Pillow-6.2.1-cp38-cp38-win_amd64.whl", hash = "sha256:38950b3a707f6cef09cd3cbb142474357ad1a985ceb44d921bdf7b4647b3e13e"},
+    {file = "Pillow-6.2.1-pp272-pypy_41-win32.whl", hash = "sha256:5a47d2123a9ec86660fe0e8d0ebf0aa6bc6a17edc63f338b73ea20ba11713f12"},
+    {file = "Pillow-6.2.1-pp372-pp372-win32.whl", hash = "sha256:c7be4b8a09852291c3c48d3c25d1b876d2494a0a674980089ac9d5e0d78bd132"},
+    {file = "Pillow-6.2.1.tar.gz", hash = "sha256:bf4e972a88f8841d8fdc6db1a75e0f8d763e66e3754b03006cbc3854d89f1cb1"},
+]
+psycopg2 = [
+    {file = "psycopg2-2.8.4-cp27-cp27m-win32.whl", hash = "sha256:72772181d9bad1fa349792a1e7384dde56742c14af2b9986013eb94a240f005b"},
+    {file = "psycopg2-2.8.4-cp27-cp27m-win_amd64.whl", hash = "sha256:893c11064b347b24ecdd277a094413e1954f8a4e8cdaf7ffbe7ca3db87c103f0"},
+    {file = "psycopg2-2.8.4-cp34-cp34m-win32.whl", hash = "sha256:9ab75e0b2820880ae24b7136c4d230383e07db014456a476d096591172569c38"},
+    {file = "psycopg2-2.8.4-cp34-cp34m-win_amd64.whl", hash = "sha256:b0845e3bdd4aa18dc2f9b6fb78fbd3d9d371ad167fd6d1b7ad01c0a6cdad4fc6"},
+    {file = "psycopg2-2.8.4-cp35-cp35m-win32.whl", hash = "sha256:ef6df7e14698e79c59c7ee7cf94cd62e5b869db369ed4b1b8f7b729ea825712a"},
+    {file = "psycopg2-2.8.4-cp35-cp35m-win_amd64.whl", hash = "sha256:965c4c93e33e6984d8031f74e51227bd755376a9df6993774fd5b6fb3288b1f4"},
+    {file = "psycopg2-2.8.4-cp36-cp36m-win32.whl", hash = "sha256:ed686e5926929887e2c7ae0a700e32c6129abb798b4ad2b846e933de21508151"},
+    {file = "psycopg2-2.8.4-cp36-cp36m-win_amd64.whl", hash = "sha256:dca2d7203f0dfce8ea4b3efd668f8ea65cd2b35112638e488a4c12594015f67b"},
+    {file = "psycopg2-2.8.4-cp37-cp37m-win32.whl", hash = "sha256:8396be6e5ff844282d4d49b81631772f80dabae5658d432202faf101f5283b7c"},
+    {file = "psycopg2-2.8.4-cp37-cp37m-win_amd64.whl", hash = "sha256:47fc642bf6f427805daf52d6e52619fe0637648fe27017062d898f3bf891419d"},
+    {file = "psycopg2-2.8.4-cp38-cp38-win32.whl", hash = "sha256:4212ca404c4445dc5746c0d68db27d2cbfb87b523fe233dc84ecd24062e35677"},
+    {file = "psycopg2-2.8.4-cp38-cp38-win_amd64.whl", hash = "sha256:92a07dfd4d7c325dd177548c4134052d4842222833576c8391aab6f74038fc3f"},
+    {file = "psycopg2-2.8.4.tar.gz", hash = "sha256:f898e5cc0a662a9e12bde6f931263a1bbd350cfb18e1d5336a12927851825bb6"},
+]
+pycparser = [
+    {file = "pycparser-2.20-py2.py3-none-any.whl", hash = "sha256:7582ad22678f0fcd81102833f60ef8d0e57288b6b5fb00323d101be910e35705"},
+    {file = "pycparser-2.20.tar.gz", hash = "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0"},
+]
+pyjwt = [
+    {file = "PyJWT-2.0.1-py3-none-any.whl", hash = "sha256:b70b15f89dc69b993d8a8d32c299032d5355c82f9b5b7e851d1a6d706dffe847"},
+    {file = "PyJWT-2.0.1.tar.gz", hash = "sha256:a5c70a06e1f33d81ef25eecd50d50bd30e34de1ca8b2b9fa3fe0daaabcf69bf7"},
+]
+pytest-runner = [
+    {file = "pytest-runner-5.3.0.tar.gz", hash = "sha256:ca3f58ff4957e8be6c54c55d575b235725cbbcf4dc0d5091c29c6444cfc8a5fe"},
+    {file = "pytest_runner-5.3.0-py3-none-any.whl", hash = "sha256:448959d9ada752de2b369cf05c1c0f9e6d2027e7d32441187c16c24c1d4d6e77"},
+]
+python3-openid = [
+    {file = "python3-openid-3.2.0.tar.gz", hash = "sha256:33fbf6928f401e0b790151ed2b5290b02545e8775f982485205a066f874aaeaf"},
+    {file = "python3_openid-3.2.0-py3-none-any.whl", hash = "sha256:6626f771e0417486701e0b4daff762e7212e820ca5b29fcc0d05f6f8736dfa6b"},
+]
+pytz = [
+    {file = "pytz-2021.1-py2.py3-none-any.whl", hash = "sha256:eb10ce3e7736052ed3623d49975ce333bcd712c7bb19a58b9e2089d4057d0798"},
+    {file = "pytz-2021.1.tar.gz", hash = "sha256:83a4a90894bf38e243cf052c8b58f381bfe9a7a483f6a9cab140bc7f702ac4da"},
+]
+requests = [
+    {file = "requests-2.22.0-py2.py3-none-any.whl", hash = "sha256:9cf5292fcd0f598c671cfc1e0d7d1a7f13bb8085e9a590f48c010551dc6c4b31"},
+    {file = "requests-2.22.0.tar.gz", hash = "sha256:11e007a8a2aa0323f5a921e9e6a2d7e4e67d9877e85773fba9ba6419025cbeb4"},
+]
+requests-oauthlib = [
+    {file = "requests-oauthlib-1.3.0.tar.gz", hash = "sha256:b4261601a71fd721a8bd6d7aa1cc1d6a8a93b4a9f5e96626f8e4d91e8beeaa6a"},
+    {file = "requests_oauthlib-1.3.0-py2.py3-none-any.whl", hash = "sha256:7f71572defaecd16372f9006f33c2ec8c077c3cfa6f5911a9a90202beb513f3d"},
+    {file = "requests_oauthlib-1.3.0-py3.7.egg", hash = "sha256:fa6c47b933f01060936d87ae9327fead68768b69c6c9ea2109c48be30f2d4dbc"},
+]
+six = [
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
+social-auth-app-django = [
+    {file = "social-auth-app-django-3.1.0.tar.gz", hash = "sha256:6d0dd18c2d9e71ca545097d57b44d26f59e624a12833078e8e52f91baf849778"},
+    {file = "social_auth_app_django-3.1.0-py2-none-any.whl", hash = "sha256:f151396e5b16e2eee12cd2e211004257826ece24fc4ae97a147df386c1cd7082"},
+    {file = "social_auth_app_django-3.1.0-py3-none-any.whl", hash = "sha256:9237e3d7b6f6f59494c3b02e0cce6efc69c9d33ad9d1a064e3b2318bcbe89ae3"},
+]
+social-auth-core = [
+    {file = "social-auth-core-4.0.3.tar.gz", hash = "sha256:694eb355825cd72d3346afb816dd899493be1a8ee7405945d2e989cabed10cf2"},
+    {file = "social_auth_core-4.0.3-py3-none-any.whl", hash = "sha256:567b1f1bb1912e2c3153df888b48ba883dabdfe72f031e8cae4d404f61745c21"},
+]
+urllib3 = [
+    {file = "urllib3-1.25.8-py2.py3-none-any.whl", hash = "sha256:2f3db8b19923a873b3e5256dc9c2dedfa883e33d87c690d9c7913e1f40673cdc"},
+    {file = "urllib3-1.25.8.tar.gz", hash = "sha256:87716c2d2a7121198ebcb7ce7cccf6ce5e9ba539041cfbaeecfb641dc0bf6acc"},
+]

pyproject.toml

@@ -0,0 +1,30 @@
+[tool.poetry]
+name = "spejstore"
+version = "0.1.0"
+description = "Your mom's basement was never this organized"
+authors = ["Warszawski Hackerspace <kontakt@hackerspace.pl>"]
+
+[tool.poetry.dependencies]
+python = "^3.8"
+certifi = "2019.11.28"
+chardet = "3.0.4"
+Django = "1.11.28"
+django-appconf = "1.0.3"
+django-flat-responsive = "2.0"
+social-auth-app-django = "3.1.0"
+django-select2 = {git = "https://github.com/drozdziak1/django-select2.git", rev = "038a763d9caab00be2d583675edf8a87618af5c7"}
+djangorestframework = "3.11.0"
+Pillow = "6.2.1"
+psycopg2 = "2.8.4"
+djangorestframework-hstore = "1.3"
+requests = "2.22.0"
+urllib3 = "1.25.8"
+django_markdown2 = "0.3.1"
+django-hstore = {git = "https://github.com/djangonauts/django-hstore.git", rev = "61427e474cb2f4be8fdfce225d78a5330bc77eb0"}
+django-tree = {git = "https://github.com/d42/django-tree.git", rev = "687c01c02d91cada9ca1912e34e482da9e73e27a"}
+
+[tool.poetry.dev-dependencies]
+
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"

requirements.txt

@@ -1,16 +1,16 @@
-certifi==2017.4.17
-chardet==3.0.3
-Django==1.11.15
+certifi==2019.11.28
+chardet==3.0.4
+Django==1.11.28
 git+https://github.com/djangonauts/django-hstore@61427e474cb2f4be8fdfce225d78a5330bc77eb0#egg=django-hstore
 git+https://github.com/d42/django-tree@687c01c02d91cada9ca1912e34e482da9e73e27a#egg=django-tree
-django-appconf==1.0.2
+django-appconf==1.0.3
 django-flat-responsive==2.0
-social-auth-app-django==2.1.0
+social-auth-app-django==3.1.0
 Django-Select2==6.3.1
-djangorestframework==3.5.4
-Pillow==3.3.1
-psycopg2==2.7.5
+djangorestframework==3.11.0
+Pillow==6.2.1
+psycopg2==2.8.4
 djangorestframework-hstore==1.3
-requests==2.16.5
-urllib3==1.21.1
-django_markdown2==0.3.0
+requests==2.22.0
+urllib3==1.25.8
+django_markdown2==0.3.1

shell.nix

@@ -0,0 +1,24 @@
+{ sources ? import ./nix/sources.nix
+, poetry2nix-olay ? import
+    "${sources.poetry2nix}/overlay.nix"
+, nixpkgs ? sources.nixpkgs
+}:
+
+let
+  common-deps = import ./common-deps.nix { inherit sources; };
+  labelmaker-common-deps = import ./labelmaker/common-deps.nix { inherit sources; };
+  pkgs = import nixpkgs { overlays = [ poetry2nix-olay ]; };
+
+  spejstore-env = pkgs.poetry2nix.mkPoetryEnv {
+    projectDir = ./.;
+  };
+in
+pkgs.mkShell {
+  DOCKER_BUILDKIT = 1;
+  COMPOSE_DOCKER_CLI_BUILD = 1;
+  nativeBuildInputs = with pkgs; [
+    spejstore-env
+    poetry
+    bundix
+  ] ++ common-deps ++ labelmaker-common-deps;
+}

spejstore.nix

@@ -0,0 +1,20 @@
+{ sources ? import ./nix/sources.nix
+, poetry2nix-olay ? import
+    # ../poetry2nix/overlay.nix
+    "${sources.poetry2nix}/overlay.nix"
+, nixpkgs ? sources.nixpkgs
+}:
+let
+  common-deps = import ./common-deps.nix { inherit sources; };
+  pkgs = import nixpkgs { overlays = [ poetry2nix-olay ]; };
+  src = ./.;
+  poetry-app = pkgs.poetry2nix.mkPoetryApplication {
+    projectDir = src;
+  };
+  dep-env = poetry-app.dependencyEnv;
+  manage-py = pkgs.writeScriptBin "manage-py" ''
+    cd ${src}
+    ${dep-env}/bin/python manage.py $@
+  '';
+in
+manage-py

spejstore/settings.py

@@ -30,9 +30,18 @@ SECRET_KEY = env('SECRET_KEY', '#hjthi7_udsyt*9eeyb&nwgw5x=%pk_lnz3+u2tg9@=w3p1m
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = not PROD
 
+if DEBUG:
+    import logging
+    logging.basicConfig(level=logging.DEBUG)
+
 ALLOWED_HOSTS = env('ALLOWED_HOSTS', 'devinventory,inventory.waw.hackerspace.pl,i,inventory').split(',')
 LOGIN_REDIRECT_URL = '/admin/'
 
+# Hostname for label QR codes, must be on the allowed list
+SHORT_HOST = env('SHORT_HOST', 'i')
+if SHORT_HOST not in ALLOWED_HOSTS:
+    print(f'"{SHORT_HOST}" is not an allowed hostname (must be one of {ALLOWED_HOSTS}')
+    raise ValueError
 
 # Application definition
 

storage/apiviews.py

@@ -1,6 +1,6 @@
 from rest_framework import viewsets, generics, filters
 from rest_framework.response import Response
-from rest_framework.decorators import detail_route
+from rest_framework.decorators import action
 from rest_framework.permissions import AllowAny
 
 from storage.models import Item, Label
@@ -8,6 +8,8 @@ from storage.serializers import ItemSerializer, LabelSerializer
 from django.http import Http404
 from django.shortcuts import get_object_or_404
 
+import logging
+
 from storage.views import apply_smart_search
 
 
@@ -31,13 +33,13 @@ class LabelViewSet(viewsets.ModelViewSet):
     queryset = Label.objects
     serializer_class = LabelSerializer
 
-    @detail_route(methods=['post'], permission_classes=[AllowAny])
+    @action(detail=True, methods=['post'], permission_classes=[AllowAny])
     def print(self, request, pk):
         quantity = min(int(request.query_params.get('quantity', 1)), 5)
         obj = self.get_object()
         for _ in range(quantity):
             obj.print()
-        return obj
+        return Response()
 
 
 class ItemViewSet(viewsets.ModelViewSet):
@@ -72,31 +74,31 @@ class ItemViewSet(viewsets.ModelViewSet):
             except Label.DoesNotExist:
                 raise Http404()
 
-    @detail_route(methods=['post'], permission_classes=[AllowAny])
+    @action(detail=True, methods=['post'])
     def print(self, request, pk):
         # todo: deduplicate
         quantity = min(int(request.query_params.get('quantity', 1)), 5)
-        obj = self.get_object()
+        item = self.get_object()
         for _ in range(quantity):
-            obj.print()
-        return obj
+            item.print()
+        return Response()
 
-    @detail_route()
+    @action(detail=True)
     def children(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_children().all(), many=True).data)
 
-    @detail_route()
+    @action(detail=True)
     def ancestors(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_ancestors().all(), many=True).data)
 
-    @detail_route()
+    @action(detail=True)
     def descendants(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_descendants().all(), many=True).data)
 
-    @detail_route()
+    @action(detail=True)
     def siblings(self, request, pk):
         item = self.get_object()
         return Response(self.serializer_class(item.get_siblings().all(), many=True).data)

storage/labelmaker_api.py

@@ -0,0 +1,34 @@
+from django.conf import settings
+
+import requests
+
+
+def labelmaker_print(name, qr_text, meta_text=''):
+    """
+    Generic labelmaker printing, throws on request failure
+    """
+    json_dict = {'name': name,
+                 'qr_text': qr_text,
+                 'meta_text': meta_text
+                 }
+    print(f'JSON dict: {json_dict}')
+    resp = requests.post(
+        f'{settings.LABEL_API}/api/1/print',
+        json=json_dict)
+    resp.raise_for_status()
+
+
+def labelmaker_render(name, qr_text, meta_text='', fmt='pdf'):
+    """
+    Generic labelmaker rendering, throws on request failure. `fmt`
+    must be one of 'pdf', 'png'.
+    """
+    json_dict = {'name': name,
+                 'qr_text': qr_text,
+                 'meta_text': meta_text
+                 }
+    print(f'JSON dict: {json_dict}')
+    resp = requests.get(
+        f'{settings.LABEL_API}/api/1/render/{fmt}',
+        json=json_dict)
+    resp.raise_for_status()

storage/models.py

@@ -1,7 +1,9 @@
 from __future__ import unicode_literals
 
-import uuid
+import json
+import logging
 import re
+import uuid
 
 from django.db import models
 from django.conf import settings
@@ -12,6 +14,8 @@ from tree.models import TreeModelMixin
 
 import requests
 
+from labelmaker_api  import labelmaker_print, labelmaker_render
+
 
 STATES = (
     ('present', 'Present'),
@@ -43,7 +47,8 @@ class Category(models.Model):
 # Also ID zawierające część name
 
 class Item(models.Model, TreeModelMixin):
-    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+    uuid = models.UUIDField(
+        primary_key=True, default=uuid.uuid4, editable=False)
 
     parent = models.ForeignKey('self', null=True, blank=True)
     path = PathField()
@@ -51,11 +56,14 @@ class Item(models.Model, TreeModelMixin):
     name = models.TextField()
 
     description = models.TextField(blank=True, null=True)
-    state = models.CharField(max_length=31, choices=STATES, default=STATES[0][0])
+    state = models.CharField(
+        max_length=31, choices=STATES, default=STATES[0][0])
     categories = models.ManyToManyField(Category, blank=True)
-    owner = models.ForeignKey(User, null=True, blank=True, related_name='owned_items')
+    owner = models.ForeignKey(
+        User, null=True, blank=True, related_name='owned_items')
 
-    taken_by = models.ForeignKey(User, null=True, blank=True, related_name='taken_items')
+    taken_by = models.ForeignKey(
+        User, null=True, blank=True, related_name='taken_items')
     taken_on = models.DateTimeField(blank=True, null=True)
     taken_until = models.DateTimeField(blank=True, null=True)
 
@@ -65,7 +73,7 @@ class Item(models.Model, TreeModelMixin):
 
     def short_id(self):
         # let's just hope we never have 4 294 967 296 things :)
-        return str(self.pk)[:8] # collisions? what collisions?
+        return str(self.pk)[:8]  # collisions? what collisions?
 
     def __str__(self):
         return '- ' * (self.get_level() or 0) + self.name
@@ -74,10 +82,13 @@ class Item(models.Model, TreeModelMixin):
         from django.urls import reverse
         return reverse('item-display', kwargs={'pk': str(self.pk)})
 
+    def get_short_url(self):
+        return f'http://{settings.SHORT_HOST}/{self.short_id()}'
+
     def get_or_create_label(self, **kwargs):
         defaults = {
             'id': re.sub('[^A-Z0-9]', '', self.name.upper())[:16],
-            }
+        }
 
         defaults.update(kwargs)
 
@@ -90,10 +101,10 @@ class Item(models.Model, TreeModelMixin):
         return next((c for c in self.categories.all() if c.icon_id), None)
 
     def print(self):
-        # todo: deduplicate
-        resp = requests.post(
-            '{}/api/1/print/{}'.format(settings.LABEL_API, self.short_id()))
-        resp.raise_for_status()
+        labelmaker_print(self.name,
+                         self.get_short_url(),
+                         f'owner: {self.owner.username}'
+                         )
 
     class Meta:
         ordering = ('path',)
@@ -112,13 +123,11 @@ class Label(models.Model):
     item = models.ForeignKey(Item, related_name='labels')
     style = models.CharField(max_length=32, choices=(
         ('basic_99012_v1', 'Basic Dymo 89x36mm label'),
-        ), default='basic_99012_v1')
+    ), default='basic_99012_v1')
     created = models.DateTimeField(auto_now_add=True, blank=True)
 
     def __str__(self):
         return '{}'.format(self.id)
 
     def print(self):
-        resp = requests.post(
-            '{}/api/1/print/{}'.format(settings.LABEL_API, self.id))
-        resp.raise_for_status()
+        self.item.print()