compiler/rustc_codegen_gcc/.github/actions/remove-rustc-dev/action.yml

name: Remove rustc-dev
description: >
  Removes the rustc-dev component, whose copies of the compiler dependencies (like libc) sit next
  to the standard library in the rustup sysroot and make `extern crate libc` ambiguous (E0464).
  Use it once nothing needs to compile rustc_codegen_gcc anymore.

inputs:
  directory:
    description: The cg_gcc directory whose rust-toolchain.toml selects the toolchain.
    required: true

runs:
  using: composite
  steps:
    - shell: bash
      working-directory: ${{ inputs.directory }}
      run: |
        # Otherwise, rustup reinstalls it on the next `cargo` or `rustc` call.
        sed -i -E 's/"rustc-dev",? *//' rust-toolchain.toml
        if grep -q rustc-dev rust-toolchain.toml; then
          echo "::error::failed to remove rustc-dev from rust-toolchain.toml"
          exit 1
        fi
        rustup component remove rustc-dev
        ls "$(rustc --print sysroot)"/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-*