buildRustPackage failures with git repos #41518
Description
Issue description
buildRustPackage seems to not be working properly with Cargo.toml that include dependencies as git repos.
For example, a Cargo.toml with the following dependency:
[dependencies]
bart = { git = "https://github.com/maghoff/bart" }is missing this section in .cargo/config:
[source."https://github.com/maghoff/bart"]
git = "https://github.com/maghoff/bart"
branch = "master"
replace-with = "vendored-sources"Steps to reproduce
I've setup a repository to demonstrate a working configuration, you can switch the two sections in default.nix to see it fail: https://github.com/jbboehr/nix-fetch-cargo-update
Technical details
$ nix-shell -p nix-info --run "nix-info -m"
- system: `"x86_64-linux"`
- host os: `Linux 4.14.43, NixOS, 18.03.132500.2f6440eb09b (Impala)`
- multi-user?: `yes`
- sandbox: `yes`
- version: `nix-env (Nix) 2.0.2`
- channels(rin): `""`
- channels(root): `"nixos-18.03.132500.2f6440eb09b"`
- nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs`