Shell Completion through postInstall Hook

[rsrohitsingh682]

postInstall = ''
            installShellCompletion --cmd <name> \
              --bash <($out/bin/<name> completion bash) \
              --zsh <($out/bin/<name> completion zsh) \
              --fish <($out/bin/<name> completion fish)
          '';

This looks for bin in <name>-deps-<version> outpath instead of looking in <name>-<version> outpath.

[ipetkov]

Hi @rsrohitsingh682, normally when you call buildPackage without specifying cargoArtifacts all attributes will be applied to the deps-only and the final derivations. Since you want the install hook to only run on the final derivation, you'll need to explicitly call buildDepsOnly with the install hook omitted:

let
  commonArgs = {
    # everything except for `postInstall`
  };
  cargoArtifacts = craneLib.buildDepsOnly commonArgs;
in
craneLib.buildPackage (commonArgs // {
  inherit cargoArtifacts;
  postInstal = ''
    # etc ...
  '';
})