CompileDirPath prefixes a directory tree with constant roots.

FindGitDirs uses filepath.Walk to recursively identify git repos, returning the slice of git paths repos are identified as `parent directory of a .git directory`.

NormalizeRepoURL normalizes repoURL to a partial directory tree.

WriteExecFile is used to write temporary shell scripts with +x .

LocalRepoPath represents a directory path string with or without a common prefix stripped.

UserPaths stores root-level paths used by the application.

RepoList is a string-indexed map of *LocalRepoPath.