freecad: work around https://github.com/FreeCAD/FreeCAD/issues/10514

[hzeller]

• Fixes FreeCAD: Failed to compute left/right minimum bearings for "cursor.pcf" #284880
• Also discussed on https://discourse.nixos.org/t/freecad-failed-to-compute-left-right-minimum-bearings-for-cursor-pcf/35266

Symptom is that failure to load a fixed font is followed by a flood of
'Failed to compute left/right minimum bearings for "cursor.pcf"'
messages that can freeze up the machine.

Isssue FreeCAD issue tracker FreeCAD/FreeCAD#10514

Is not yet fixed, but with a working solution, which has not made it into the repo yet: FreeCAD/FreeCAD#10514 (comment) The hotfix from that comment is added here slightly edited as freecad-font-10514.patch

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[hzeller]

Looks good ? Would be good to get it merged to make freecad usable in Nix.

[hzeller]

Ready to approve and merge ?

[hzeller]

Can you review this change @AndersonTorres ?

This would be really good to have to have a usable freecad that does not lock up and use 100% resources.

[hzeller]

widening the audience to @kirillrdy who merged the 0.21 -> 1.0rc2 #343592 PR

[Artturin]

@srounce If you want to get review requests for packages you maintain you need to join the https://github.com/orgs/NixOS/teams/nixpkgs-maintainers team

[hzeller]

Yeah, but I ( @hzeller ) am not a maintainer of this package, just someone who had a fix.

[hzeller]

oh, I see, you mean that @srounce gets the notifications for this PR.

[evils]

i'm still getting this on current nixos-unstable with freecad-wayland (on sway) which should include this workaround

deftdawg's workaround mentioned here (and launching FreeCAD from the same shell i did that in) indeed got rid of the spam and made FreeCAD usable