Streamline generating continue file

Fixes #29

flake.nix

@@ -168,19 +168,15 @@
             // uploads
             // cibuilds
             // {
-              continue = pkgs.writeText "continue.yml" (
+              continue = (
-                builtins.replaceStrings
+                import ./nix/continue.nix {
-                  [
+                  inherit
-                    "QEMU_MATRIX"
+                    pkgs
-                    "VBOX_MATRIX"
-                    "HYPERV_MATRIX"
-                  ]
-                  [
                     qemu_list
                     vbox_list
                     hyperv_list
-                  ]
+                    ;
-                  (builtins.readFile ./.gitlab-ci-build.yml.in)
+                }
               );
               cache = pkgs.callPackage (import ./nix/cache.nix) { inherit active distroFile; };
               validate = pkgs.callPackage (import ./nix/validate.nix) { };

nix/continue.nix

@@ -0,0 +1,98 @@
+{
+  pkgs,
+  qemu_list,
+  vbox_list,
+  hyperv_list,
+  ...
+}:
+
+let
+
+  general = {
+    stage = "build";
+    cache = [
+      {
+        key = {
+          files = [ "sources/build.pkr.hcl" ];
+        };
+        paths = [ "./packer_config/" ];
+      }
+    ];
+    rules = [
+      {
+        "if" = "$CI_COMMIT_TAG";
+        variables = {
+          EXCEPT = "";
+          JOB_PREFIX = "upload";
+        };
+      }
+      {
+        "if" = "$CI_COMMIT_TAG =~ \"/^$/\"";
+        variables = {
+          EXCEPT = "-except=upload";
+          JOB_PREIX = "ci";
+        };
+      }
+    ];
+    needs = [
+      {
+        pipeline = "$PARENT_PIPELINE_ID";
+        job = "generate";
+        artifacts = true;
+      }
+    ];
+    script = [
+      "nix run \".#\\\"\${JOB_PREIX}\${buildcmd}\\\"\" || exit 1"
+    ];
+  };
+
+  variables = {
+    PACKER_CONFIG_DIR = "./packer_config/";
+    PACKER_CACHE_DIR = "./cache/";
+    PACKER_LOG = "1";
+  };
+
+  continue = {
+    stages = [
+      "build"
+      "release"
+    ];
+    "qemu.amd64" = general // {
+      variables = variables // {
+        only = "-only=qemu.amd64";
+      };
+      tag = [ "qemu" ];
+      parallel = {
+        matrix = qemu_list;
+      };
+      before_script = [
+        "echo $BUILD"
+        "env"
+      ];
+    };
+    "virtualbox-iso.amd64" = general // {
+      variables = variables // {
+        only = "-only=\"virtualbox-iso.amd64\"";
+      };
+      tags = [ "vbox" ];
+      parallel = {
+        matrix = vbox_list;
+      };
+    };
+    "hyperv-iso.amd64" = general // {
+      variables = variables // {
+        only = "-only=\"hyperv-iso.amd64\"";
+      };
+      tags = [ "hyperv" ];
+      parallel = {
+        matrix = hyperv_list;
+      };
+      script = [
+        "packer init sources"
+        "packer build -only=\"hyperv-iso.amd64\" -var-file=\"\${distro}\" -var build=\${BUILD} -var cpus=2 -var memory=4096 \${EXCEPT} sources"
+        "if (-not $?) { throw \"Error in build\")"
+      ];
+    };
+  };
+in
+pkgs.writeText "continue.yml" (builtins.toJSON continue)