Use mkDerivation instead of npmbuild

threema-desktop.nix

@@ -1,17 +1,22 @@
 {
   lib,
-  buildNpmPackage,
+  stdenv,
   fetchFromGitHub,
   rustPlatform,
+  nodejs,
+  python3,
+  cargo,
+  rustc,
   binaryen,
   pkg-config,
   openssl,
   wasm-bindgen-cli,
   protobuf,
   lld,
+  typescript,
 }:
 
-buildNpmPackage rec {
+stdenv.mkDerivation rec {
   pname = "threema-desktop";
   version = "2.0-beta56";
 
@@ -22,12 +27,6 @@ buildNpmPackage rec {
     hash = "sha256-wMIQ7piFPOBp0IleSnDSrZjaqXNBDyeELjx+938pmVk=";
   };
 
-  forceGitDeps = true;
-
-  npmDepsHash = "sha256-9pyBbA+MARxWPZzyvjyKCuofgt+X3DrDCa81S6/S5qg="; # replace after first build
-  npmFlags = [ "--legacy-peer-deps" ];
-  makeCacheWritable = true;
-
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit src;
     sourceRoot = "${src.name}/libs/libthreema";
@@ -35,12 +34,17 @@ buildNpmPackage rec {
   };
 
   nativeBuildInputs = [
-    rustPlatform.bindgenHook
+    nodejs
+    python3
+    cargo
+    rustc
     wasm-bindgen-cli
     binaryen
     pkg-config
     protobuf
+    rustPlatform.bindgenHook
     lld
+    typescript
   ];
 
   buildInputs = [
@@ -50,19 +54,56 @@ buildNpmPackage rec {
   postPatch = ''
     patchShebangs --build ./tools
     patchShebangs --build ./libs/libthreema/tools
+
+    # Remove strict engine requirements from package.json to allow close versions
     sed -i '/"engines":/,/},/d' package.json
   '';
 
+  preBuild = ''
+    # Set npm home to a writable location
+    export NPM_CONFIG_CACHE=$TMPDIR/npm-cache
+    export NPM_CONFIG_USERCONFIG=$TMPDIR/.npmrc
+
+    # Disable engine strict checking via environment variable
+    export NPM_CONFIG_ENGINE_STRICT=false
+
+    # Set up Cargo environment in writable locations
+    export CARGO_HOME=$TMPDIR/cargo
+    mkdir -p $CARGO_HOME
+
+    # Configure Cargo to work offline using the vendored dependencies
+    cat > $CARGO_HOME/config.toml << EOF
+    [source.crates-io]
+    replace-with = "vendored-sources"
+
+    [source.vendored-sources]
+    directory = "${cargoDeps}"
+    EOF
+
+  '';
   buildPhase = ''
     runHook preBuild
+
+    # Build libthreema WASM
     npm run libthreema:build
+
+    # Package as binary
     npm run package binary consumer-live
+
     runHook postBuild
   '';
 
   installPhase = ''
     mkdir -p $out/opt/threema-desktop
-    cp -r build/out/* $out/opt/threema-desktop
+    cp -r build/out/* $out/opt/threema-desktop/
+
+    # Create a wrapper script
+    mkdir -p $out/bin
+    cat > $out/bin/threema-desktop << EOF
+    #!/bin/sh
+    exec $out/opt/threema-desktop/Threema "\$@"
+    EOF
+    chmod +x $out/bin/threema-desktop
   '';
 
   meta = with lib; {