2.3.0 (26 Aug 2020)

simplified override system, autodetect requirements, improved success rate

Features

• Simplified generic override system via _ (underscore) argument for mkPython.
  Example: _.{package}.buildInputs.add = [...]
• buildPythonPackage now automatically detects requirements. Therefore the requrements argument becomes optional.
• buildPythonPackage now automatically detects package name and version. Therefore those attributes become optional.
• buildPythonPackage can now be called while only passing a tarball url or a path
• mkPython allows to include python packages from arbitrary sources via new argument extra_pkgs
• mkPython can now be called while only passing a list of tarball urls or paths

Fixes

• More bugs introduced by packages with dot in name
• Definitions from overrides_pre were sometimes disregarded due to wrong use of with-statements inside a recursive attrset.
• Fix installation of the mach-nix tool via pip. (requirements were missing)
• packages which use a non-normalized version triggered an evaluation error since mach-nix tried to reference their source via normalized version.
• wheels removed from pypi were not removed from the dependency graph which could result in environments failing to build