identifier_filter = ~r/[^0-9a-z\-]+/i
git_available? = match?({_output, 0}, System.cmd("sh", ["-c", "command -v git"]))
+ dotgit_present? = File.exists?(".git")
git_pre_release =
- if git_available? do
+ if git_available? and dotgit_present? do
{tag, tag_err} =
System.cmd("git", ["describe", "--tags", "--abbrev=0"], stderr_to_stdout: true)
# Branch name as pre-release version component, denoted with a dot
branch_name =
with true <- git_available?,
+ true <- dotgit_present?,
{branch_name, 0} <- System.cmd("git", ["rev-parse", "--abbrev-ref", "HEAD"]),
branch_name <- String.trim(branch_name),
branch_name <- System.get_env("PLEROMA_BUILD_BRANCH") || branch_name,