nixpkgs

Is there an existing issue for this?

• I have searched the existing issues

Issue description

I was using home-manager on macos mojave just fine. Since updating to the newest release wiped my /nix, I had to reinstall.

On a completely clean install now (enabled home-manager channel and installed it only), I get:

home-manager switch
error: flake 'path:/Users/virapto

Is your feature request related to a problem? Please describe.
using rules_node with the nixpkgs node is extremely painful and requires the workaround specified in bazelbuild/rules_nodejs#464 / bazelbuild/bazel#2927

Specifically:

nixpkgs_package(
    name = "nixpkgs_nodejs",
    build_file_content = 'exports_files(glob(["nixpkgs

It would be convenient if we could ship some bash, zsh, and fish shell completions for the cargo2nix code generation tool. We could maintain these shell completions ourselves, or ideally, we could switch to clap and/or structopt for argument parsing and generate these completions at build-time with a build.rs.