Revert "desktopToDarwinBundle: use imagemagick_light"

[reckenrode]

Changing desktopToDarwinBundle to use imagemagick_light is a breaking change. imagemagick_light does not support png, which causes any package with png icons to fail to build. In particular, this affects inkscape and gimp, which are Darwin channel blockers.

I am targeting staging-next #281828 because this change has not yet hit master. There are no builds yet on Hydra since this is a new cycle, and builds of affected packages have not started yet.

I discovered this change while testing #282624 to make sure Darwin channel blockers and packages with workarounds for #166205 reverted all built. I confirmed that mupdf-headless still builds with this commit reverted.

Description of changes

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/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 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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[reckenrode]

This is the error I get when building Inkscape.

desktopToDarwinBundle: Application bundles do not understand desktop entry field codes. Changed 'inkscape %F' to 'inkscape'.
desktopToDarwinBundle: using fixed icon /nix/store/mx068xiynld3qdknqgzpi1yjcfaq8rvc-inkscape-1.3.2/share/icons/hicolor/16x16/apps/org.inkscape.Inkscape.png for size 16
convert: no decode delegate for this image format `PNG' @ error/constitute.c/ReadImage/746.
convert: no images defined `/private/tmp/nix-build-inkscape-1.3.2.drv-0/tmp.abR6tIyZhK/16x16.png' @ error/convert.c/ConvertImageCommand/3362.