not sure how to build protoc-rust-grpc about crate2nix HOT 4 CLOSED

Try setting PROTOC="${protobuf}/bin/protoc"; in your actual crates override. e.g:

with (import <nixpkgs> {});

let
  myCrateBase = callPackage ./Cargo.nix {};
  myCrate = myCrateBase.rootCrate.build.override {
    crateOverrides = defaultCrateOverrides // {
      myCrate = attrs: {
        PROTOC="${protobuf}/bin/protoc";
      };
    };
  };
in
myCrate

I have a few cases where prost-build is being used to build the protobuf files and setting PROTOC works there.

from crate2nix.

It didn't seem to work.

One weird thing is that I also tried to set PROTOC = "${protobuf324}/bin/protoc"; and it didn't whine except for the same error I had before. Is it being evaluated?

I created a repo if you want to test https://github.com/bbigras/test-proto

from crate2nix.

Try setting PROTOC="${protobuf}/bin/protoc"; in your actual crates override. e.g:

I don't think that currently works. As far as I can see, crateOverrides are actually never passed through to buildRustCrate. However, if you modify the generated Cargo.nix with:

--- Cargo.nix.orig	2020-01-24 09:06:08.164919469 +0100
+++ Cargo.nix	2020-01-24 09:25:19.662569038 +0100
@@ -1293,7 +1293,8 @@
               url = "https://crates.io/api/v1/crates/${crateConfig.crateName}/${crateConfig.version}/download";
               sha256 = crateConfig.sha256;
             });
-            inherit features dependencies buildDependencies crateRenames;
+
+            inherit crateOverrides features dependencies buildDependencies crateRenames;
           });
     in builtByPackageId;

Building will fail with

Error: cannot coerce a set to a string, at /nix/store/xs747j6hnlyszg75qf4j7qpmascnjkkh-source/pkgs/build-support/rust/build-rust-crate/default.nix:93:5

The only thing that seems to work is if you provide a buildRustCrate as an argument to Cargo.nix as in this test:

https://github.com/kolloch/crate2nix/blob/master/sample_projects/bin_with_git_submodule_dep/default.nix

from crate2nix.

It works. Thanks @danieldk !

from crate2nix.