31 lines
896 B
Python
31 lines
896 B
Python
"""Utility to diff nix derivations."""
|
|
|
|
import logging
|
|
import shutil
|
|
|
|
from flupdt.common import bash_wrapper
|
|
|
|
|
|
def compare_derivations(
|
|
path_to_flake: str, path_to_pre_drv: str, path_to_post_drv: str
|
|
) -> list[str]:
|
|
"""Gets all derivations present in a flake.
|
|
|
|
:param path_to_flake: path to flake to be checked
|
|
:returns a list of all valid derivations in the flake
|
|
:raises RuntimeError: fails if nix is not present in the PATH
|
|
"""
|
|
nvd_path = shutil.which("nvd")
|
|
if nvd_path is None:
|
|
status_msg = "nvd is not available in the PATH, please verify that it is installed"
|
|
raise RuntimeError(status_msg)
|
|
diff_output = bash_wrapper(
|
|
f"{nvd_path} diff {path_to_pre_drv} {path_to_post_drv}", path=path_to_flake
|
|
)
|
|
|
|
logging.debug(diff_output[0])
|
|
logging.debug(diff_output[1])
|
|
logging.debug(diff_output[2])
|
|
|
|
return diff_output
|