release: Finish preparation for 4.4.0

release: Merge default into stable for release preparation

git: use peeled commit hashes for get_refs so that annotated tags work, fixes #4223

hg: Add logging around check_url Add useful logging around check_url. This is especially useful when things go wrong.

release: merge back stable branch into default

Added tag v4.3.1 for changeset d38f2c2b861d

release: Finish preparation for 4.3.1

release: updated pip2nix output for 4.3.1

release: Start preparation for 4.3.1

nix: updated package defs after release