overlay/plume: properly wasm-pack

overlay/plume/default.nix

@@ -1,6 +1,6 @@
 { naersk, fenix
 , system, stdenv, fetchFromGitHub, buildEnv
-, pkg-config, gettext
+, pkg-config, gettext, wasm-pack, wasm-bindgen-cli
 , openssl, postgresql
 }:
 
@@ -60,6 +60,14 @@ let
       openssl
       postgresql
     ];
+    overrideMain = oa: {
+      installPhase = ''
+        ${oa.installPhase}
+
+        mkdir -p $out/share/plume
+        cp -ar static $out/share/plume/
+      '';
+    };
   };
 
   plm = naersk-lib.buildPackage {
@@ -80,7 +88,7 @@ let
     pname = "plume-front";
     root = src;
     nativeBuildInputs = [
-      gettext
+      gettext wasm-pack wasm-bindgen-cli
     ];
     CARGO_BUILD_TARGET = "wasm32-unknown-unknown";
     cargoBuildOptions = x:
@@ -88,6 +96,26 @@ let
         "--package=plume-front"
       ];
     copyLibs = true;
+    overrideMain = oa: {
+      buildPhase = ''
+        substituteInPlace plume-front/Cargo.toml \
+          --replace '"cdylib"' '"cdylib", "rlib"'
+
+        cat >>plume-front/Cargo.toml <<EOF
+        [package.metadata.wasm-pack.profile.release]
+        # wasm-opt is missing from nixpkgs
+        wasm-opt = false
+        EOF
+
+        wasm-pack build --target web --release plume-front
+      '';
+      installPhase = ''
+        ${oa.installPhase}
+
+        mkdir -p $out/share/plume/static
+        cp -a plume-front/pkg/*.{js,ts,wasm} $out/share/plume/static/
+      '';
+    };
   };
 in buildEnv {
   name = "plume-env";