Repackage liberaforms without mach-nix

[cleeyv]

Issue #39 identifies how the use of mach-nix for liberaforms (which uses an IDF) depended on an old version of nixpkgs as a workaround to a bug a with mach-nix DavHau/mach-nix#549 which made it incompatible with newer versions of nixpkgs. That is documented here: https://github.com/ngi-nix/ngipkgs/blob/main/pkgs/liberaforms/env.nix#L9-L16 it was from back in June when we set up ngipkgs with liberaforms as the initial test service.

Since then, I see that in early July a new PR was merged for mach-nix DavHau/mach-nix#563 that apparently fixes the incompatibility with newer nixpkgs. Assuming this fix works, then in theory this issue could be resolved by sourcing the import of mach-nix for liberaforms from its master branch (to include the fix) and then removing the old nixpkgs workaround. I tried this here: https://github.com/ngi-nix/ngipkgs/tree/remove-old-nixpkgs but ran into the following error (which was also problematic in earlier iterations of packaging liberaforms):

Some requirements could not be resolved.
Top level requirements: 
  alembic==1.7.5  attrs==21.4.0  Babel==2.9.1  beautifulsoup4==4.10.0  bleach==4.1.0  cachelib==0.5.0  certifi==2021.10.8  cffi==1.15.0  charset-normalizer==2.0.9  click==8.0.3  cryptography==36.0.0  dnspython==2.1.0  email-validator==1.1.3  feedgen==0.9.0  F>
Providers:
  {'_default': ['wheel', 'sdist', 'nixpkgs'],
   'gdal': ['nixpkgs'],
   'pip': ['nixpkgs', 'sdist'],
   'setupmeta': ['wheel'],
   'setuptools': ['nixpkgs'],
   'wheel': ['nixpkgs', 'sdist']}
Mach-nix version: master
Python: 3.10.12
Cause: Requirements conflict: cryptography (<SpecifierSet('==36.0.0')>,)
The requirements which caused the error:
  cryptography (<SpecifierSet('==36.0.0')>,)

The given requirements might contain package versions which are not yet part of the dependency DB
currently used. The DB can be updated by specifying 'pypiDataRev' when importing mach-nix.
For examples see: https://github.com/DavHau/mach-nix/blob/master/examples.md

As discussed in #24, the use of an IFD by mach-nix for the liberaforms package is already a problem for CI performance, and there are likely going to continue to be problems with mach-nix since it doesn't seem to be very actively maintained anymore. Therefore this new issue with mach-nix raised in issue #39 is adding to a growing list of reasons to disable liberaforms in ngipkgs until further work can be done on it to transition away from the use of mach-nix and IFDs, perhaps also as part of updating the packaging to a new version 3.0 of liberaforms which looks like it could come out sometime in the next year.

Tracking issue: #12

[fricklerhandwerk]

Closed by #194

[lorenzleutgeb]

Archiving https://github.com/ngi-nix/liberaforms-flake/ now. Missing permissions. @fricklerhandwerk please archive that repo.