forgejo actions: copy gh improvements, maybe?

.forgejo/workflows/ci.yml

@@ -1,63 +1,52 @@
 name: CI
 
 on:
-  pull_request:
   push:
     branches: [main]
 
 jobs:
-  get-x86_64-hosts:
+  get-hosts:
     runs-on: self-hosted-x86_64-linux
     outputs:
-      hosts: ${{ steps.output-hosts.outputs.hosts }}
+      matrix: ${{ steps.hosts_out.outputs.matrix }}
     steps:
-      - uses: actions/checkout@v3
-      - name: output-hosts
+      - name: repository checkout
+        uses: actions/checkout@v4
+      - id: hosts_out
+        name: set hosts var
         run: |
-          HOSTS_JSON="$(nix eval -I nixpkgs=$(nix flake metadata nixpkgs --json | jq -r .path) --raw --impure --expr '
-            with import <nixpkgs> { };
-            builtins.toJSON (lib.mapAttrsToList (n: v: n)
-              (lib.attrsets.filterAttrs (n: v: v.pkgs.system == pkgs.system)
-                (builtins.getFlake(builtins.toString ./.)).outputs.nixosConfigurations))'
-          )"
-          echo "::set-output name=hosts::${HOSTS_JSON}"
+          {
+            echo -n "matrix="
+            nix eval --raw --impure --expr '
+                let
+                    f = configs: builtins.groupBy (n: configs.${n}.pkgs.system) (builtins.attrNames configs);
+                in
+                    builtins.toJSON (f (builtins.getFlake(builtins.toString ./.)).outputs.nixosConfigurations)'
+            echo ""
+          }  >> "$GITHUB_OUTPUT"
 
-  get-aarch64-hosts:
-    runs-on: self-hosted-aarch64-linux
-    outputs:
-      hosts: ${{ steps.output-hosts.outputs.hosts }}
-    steps:
-      - uses: actions/checkout@v3
-      - name: output-hosts
-        run: |
-          HOSTS_JSON="$(nix eval -I nixpkgs=$(nix flake metadata nixpkgs --json | jq -r .path) --raw --impure --expr '
-            with import <nixpkgs> { };
-            builtins.toJSON (lib.mapAttrsToList (n: v: n)
-              (lib.attrsets.filterAttrs (n: v: v.pkgs.system == pkgs.system)
-                (builtins.getFlake(builtins.toString ./.)).outputs.nixosConfigurations))'
-          )"
-          echo "::set-output name=hosts::${HOSTS_JSON}"
-
-  build-nixos-x86_64-linux:
+  x86_64-linux:
     runs-on: self-hosted-x86_64-linux
-    needs: get-x86_64-hosts
+    needs: [get-hosts]
     strategy:
+      fail-fast: false
       matrix:
-        host: ${{fromJSON(needs.get-x86_64-hosts.outputs.hosts)}}
+        host: ${{ fromJson(needs.get-hosts.outputs.matrix).x86_64-linux }}
     steps:
-      - uses: actions/checkout@v3
+      - name: repository checkout
+        uses: actions/checkout@v4
       - name: build host configuration ${{ matrix.host }}
-        run: |
-          nixos-rebuild build --verbose --flake ".#${{ matrix.host }}"
+        run: nixos-rebuild build --verbose --flake ".#${{ matrix.host }}"
 
-  build-nixos-aarch64-linux:
+  aarch64-linux:
     runs-on: self-hosted-aarch64-linux
-    needs: get-aarch64-hosts
+    needs: [get-hosts]
     strategy:
+      fail-fast: false
       matrix:
-        host: ${{fromJSON(needs.get-aarch64-hosts.outputs.hosts)}}
+        host: ${{ fromJson(needs.get-hosts.outputs.matrix).aarch64-linux }}
     steps:
-      - uses: actions/checkout@v3
+      - name: repository checkout
+        uses: actions/checkout@v4
       - name: build host configuration ${{ matrix.host }}
-        run: |
-          nixos-rebuild build --verbose --flake ".#${{ matrix.host }}"
+        run: nixos-rebuild build --verbose --flake ".#${{ matrix.host }}"