- retrieve dependency information for nixpkgs packages only from sdist and not from wheel provider
- skip dependency removal if package dependencies are unknown
Given that we update the dependencies of all the packages we add to the
override, and remove any dependencies of those packages that we don't override,
there is no need to recursivly update the dependencies, since the dependcies we
are adding have already had their dependencies updated.
# 2.2.2 (17 Aug 2020)
### Fixes
- Packages with dot in name led to invalid nix expression
- Problem generating error message for resolution impossible errors
- `buildPythonPackage` of mach-nix failed if arguments like `pkgs` were passed.
- When overriding packages, mach-nix now falls back to using `overrideAttrs` if `overridePythonAttrs` is not available.
### Package Fixes:
- pip: installation failed. Fixed by forcing `nixpkgs` provider
- gdal: building from sdist doesn't work. Fixed by forcing `nixpkgs` provider
### Development
- Merged project `pypi-crawlers` into mach-nix (was separated project before)
# 2.2.0 (09 Aug 2020)
Improved success rate, MacOS support, bugfixes, optimizations
### Features
- Improved selection of wheel releases. MacOS is now supported and architectures besides x86_64 should be handled correctly.
- Whenever mach-nix resolves dependencies, a visualization of the resulting dependency tree is printed on the terminal.
- The dependency DB is now accessed through a caching layer which reduces the resolver's CPU time significantly for larger environments.
- The python platform context is now generated from the nix build environment variable `system`. This should decrease the chance of impurities during dependency resolution.
### Fixes
- The requires_python attribute of wheels was not respected. This lead to failing builds especially for older python versions. Now `requires_python` is part of the dependency graph and affects resolution.
- Detecting the correct package name for python packages in nixpkgs often failed since the attribute names don't follow a fixed schema. This lead to a handful of different errors in different situations. Now the package names are extracted from the pypi `url` inside the `src` attribute which is much more reliable. For packages which are not fetched from pypi, the `pname` attribute is used as fallback.
- Fixed bug which lead to the error `attribute 'sdist' missing` if a package from the nixpkgs provider was used which doesn't publish it's source on pypi. (For example `tensorflow`)
### Other Changes
- Mach-nix now uses a revision of the nixpkgs-unstable branch instead of nixos-20.03 as base fo the tool and the nixpkgs provider.
- Updated revision of the dependency DB
