chore(nix): switch to yarn2nix

flake.nix

@@ -126,7 +126,7 @@
                 };
                })
 
-            (import ./nix/maildev)
+            # (import ./nix/maildev)
             haskell-nix.overlay
             (import ./nix/uniworx { inherit inputs frontendSource backendSource; gitRevision = if self ? rev then self.rev else null; })
             (import ./nix/docker { inherit self; })

nix/uniworx/backend.nix

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2022-2023 Gregor Kleen <gregor@kleen.consulting>, Steffen Jost <jost@cip.ifi.lmu.de>
+# SPDX-FileCopyrightText: 2022-2024 Sarah Vaupel <sarah.vaupel@uniworx.de>, Gregor Kleen <gregor@kleen.consulting>, Steffen Jost <jost@cip.ifi.lmu.de>
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 

nix/uniworx/frontend.nix

@@ -1,20 +1,36 @@
-# SPDX-FileCopyrightText: 2022 Gregor Kleen <gregor.kleen@ifi.lmu.de>
+# SPDX-FileCopyrightText: 2022-2024 Sarah Vaupel <sarah.vaupel@uniworx.de>, Gregor Kleen <gregor.kleen@ifi.lmu.de>
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
 { frontendSource, ... }: final: prev:
 let
+  pname = "uniworx-frontend";
+  # extract the version from package.json (ensuring these never get out of sync)
+  version = (builtins.fromJSON (builtins.readFile ./../../package.json)).version;
+
+  # grab our dependencies
+  deps = prev.mkYarnModules {
+    inherit pname version;
+    packageJSON = ./../../package.json;
+    yarnLock = ./../../yarn.lock;
+    yarnNix = ./../../yarn.nix;
+  };
   setupNodeDeps = ''
     ln -s ${final.uniworxNodeDependencies}/lib/node_modules ./node_modules
     export PATH="${final.uniworxNodeDependencies}/bin:$PATH"
   '';
 in {
   uniworxFrontend = prev.stdenv.mkDerivation {
-    name = "uniworx-frontend";
+    inherit pname version;
+
     srcs = [frontendSource prev.uniworxWellKnown];
     sourceRoot = "source";
 
-    phases = ["unpackPhase" "checkPhase" "buildPhase" "installPhase"];
+    phases = ["unpackPhase" "configurePhase" "checkPhase" "buildPhase" "installPhase"];
+
+    # No build dependencies, all work has been done for you already by mkYarnModules
+    nativeBuildInputs = [ ];
+    buildInputs = [ ];
 
     postUnpack = ''
       ${final.xorg.lndir}/bin/lndir -silent ../uniworx-well-known $sourceRoot
@@ -29,6 +45,12 @@ in {
       runHook postBuild
     '';
 
+    # Grab the dependencies from the above mkYarnModules derivation
+    configurePhase = ''
+      mkdir -p $out/bin
+      ln -s ${deps}/node_modules $out
+    '';
+
     preCheck = ''
       ${setupNodeDeps}
       export FONTCONFIG_FILE="${final.fontconfig.out}/etc/fonts/fonts.conf"
@@ -58,5 +80,8 @@ in {
         ( ${oldAttrs.checkPhase} ) | tee $out/test-stdout
       '';
     });
+
+    # Skip the unpack step (mkDerivation will complain otherwise)  
+    dontUnpack = true;
   };
 }

nix/uniworx/node-dependencies.nix

@@ -3,5 +3,11 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
 { ... }: final: prev: {
-  uniworxNodeDependencies = (prev.callPackage ../frontend {}).nodeDependencies;
+  uniworxNodeDependencies = pkgs.mkYarnModules {
+    pname = "uniworx-node-dependencies";
+    version = (builtins.fromJSON (builtins.readFile ./../../package.json)).version;
+    packageJSON = ../../package.json;
+    yarnLock = ../../yarn.lock;
+    yarnNix = ../../yarn.nix;
+  };
 }