Dynamic matrix

Author: sestrella

.github/workflows/ci.yml

@@ -7,30 +7,27 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  pre-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v22
+      - run: echo "package=$(./foo)" >> "$GITHUB_OUTPUT"
+        id: foo
+    outputs:
+      package: ${{ steps.foo.ouputs.package }}
+
   build:
     strategy:
-      # TODO: Create a dynamic matrix
       matrix:
         runner:
           - os: macos-latest
             system: x86_64-darwin
           - os: ubuntu-latest
             system: x86_64-linux
-        package:
-          - name: terraform-1_6_3
-            version: 1.6.3
-            allow_unfree: 1
-          # - name: terraform-1_6_1
-          #   version: 1.6.1
-          #   allow_unfree: 1
-          # - name: terraform-1_6_0
-          #   version: 1.6.0
-          #   allow_unfree: 1
-          # - name: terraform-1_5_7
-          #   version: 1.5.7
-          #   allow_unfree: 0
-          #
+        package: ${{ needs.pre-build.outputs.package }}
     runs-on: ${{ matrix.runner.os }}
+    needs: [pre-build]
     steps:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v22
@@ -42,4 +39,4 @@ jobs:
         id: nix-build
         env:
           NIXPKGS_ALLOW_UNFREE: ${{ matrix.package.allow_unfree }}
-      - run: cachix pin nixpkgs-terraform v${{ matrix.package.version }}-${{ matrix.runner.system }} ${{ steps.nix-build.outputs.out-paths }} --keep-revisions 1
+      # - run: cachix pin nixpkgs-terraform v${{ matrix.package.version }}-${{ matrix.runner.system }} ${{ steps.nix-build.outputs.out-paths }} --keep-revisions 1

foo

@@ -0,0 +1,17 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p python3Packages.semver
+
+# vi: ft=python
+
+import json
+import semver
+
+def foo(version):
+    splitted_version = version.split(".")
+    package_suffix = "_".join(splitted_version)
+    return { "version": version, "package": f"terraform-{package_suffix}", "allow_unfree": 1 if semver.compare(version, "1.6.0") >= 0 else 0 }
+
+with open("versions.json") as f:
+    versions = json.load(f)
+    result = list(map(foo, versions))
+    print(json.dumps(result))