revisionWithDefault

lib.trivial.revisionWithDefault

Docs pulled from | This Revision | 10 minutes ago

Attempts to return the the current revision of nixpkgs and returns the supplied default value otherwise.

Inputs

default: Default value to return if revision can not be determined

Type

revisionWithDefault :: string -> string

Noogle detected

Implementation

The following is the current implementation of this function.

revisionWithDefault =
    default:
    let
      revisionFile = "${toString ./..}/.git-revision";
      gitRepo = "${toString ./..}/.git";
    in
    if lib.pathIsGitRepo gitRepo then
      lib.commitIdFromGitRepo gitRepo
    else if lib.pathExists revisionFile then
      lib.fileContents revisionFile
    else
      default;