Build package with local crates

[nezsha]

I've been recently building a project that I have a few local crates for that I did not publish and don't intend to.
I wanted to compile one of my the crates but it depends on another local crate and nix fails to find it during the build process.

 packages = {
        editor = craneLib.buildPackage {
          src = ./editor;
          name = "editor";
          version = "1.1.1";
          nativeBuildInputs = with pkgs; [
            openssl
            pkg-config
            libiconv
          ];
          buildInputs = with pkgs; [
            openssl
            pkg-config
            libiconv
            ffmpeg
          ];

          postInstall = ''
            install -Dt $out/bin editor
            mkdir $out/bin/.wrapped
            mv $out/bin/editor $out/bin/.wrapped/
            makeWrapper "$out/bin/.wrapped/editor "$out/bin/editor \
            --prefix LD_LIBRARY_PATH : ${pkgs.ffmpeg} \
            --prefix PATH : $out/bin
          '';
        };
      };

     >   failed to load source for dependency `bucket`
       >
       > Caused by:
       >   Unable to update /build/modules/bucket
       >
       > Caused by:
       >   failed to read `/build/modules/bucket/Cargo.toml`
       >
       > Caused by:
       >   No such file or directory (os error 2)

The program I want to compile depends on like 2 more local crates, is there a way to compile the project so it gets included into the derivation? The issues I saw about this didn't really help me

[nezsha]

I managed to use workspaces with cargo-hakari and now it seems to compile just fine.

[dpc]

You shouldn't need to use hakari for it. From my experience if the crate specifies path it should work just fine.

[ipetkov]

src = ./editor;

When using src = ./editor; this instructs Nix to only make the ./editor directory available for the derivation. Assuming other workspace crates are in different directories, you will need to change the src attribute to include them.

The quick-start-workspace example shows how this can be achieved with lib.fileset:

crane/examples/quick-start-workspace/flake.nix

Lines 74 to 80 in 9791c77

	fileset = lib.fileset.unions [
	./Cargo.toml
	./Cargo.lock
	./my-common
	./my-workspace-hack
	crate
	];