Tracking: removal of IFD in modules

[getchoo]

Import from derivation is a cool and very helpful feature of Nix, but can seriously hurt evaluation performance, and may not be allowed in some cases. We should try to avoid it when possible (in a reasonable way)

Modules that currently require IFD include:

Note

This list will most likely grow after #384, as sources will be downloaded via Nixpkgs fetchers rather than builtin fetchers. See the difference between them here

• cava cava sans IFD #376
• gh-dash
• imv imv sans IFD #375
• mako mako sans IFD #341
• swaylock swaylock sans IFD #340

[mightyiam]

Would it still be IFD if sources are flake inputs?

[getchoo]

No, but for the same reason #377 prevents IFD. Flake inputs use builtin fetchers, which would still block evaluation for every port download

See also #388