Nixpkgs: error: TeX Live package xdvi-22.87.03 is missing hash!

[peti]

Nixpkgs at 8cdd9d56de158550ed6cc307c85df4d2462b5e01 cannot evaluate:

texlive.combine {
  inherit (self.texlive) scheme-medium xdvi 
};

Cc: @vcunat

[dtzWill]

While adding the missing hash is straightforward, the real problem is sorting out how this wasn't included in the fixedHashes.nix generated hashes.

Looks like the problem is due to this: https://github.com/NixOS/nixpkgs/blob/5b42c6f196d976d176fe73cdf8beb5420291c489/pkgs/tools/typesetting/tex/texlive/default.nix#L71

In which we remove xdvi from collection-basic and into collection-genericextra. Except collection-genericextra no longer exists!

I'm not sure how this isn't an evaluation error, but regardless the question becomes what collection xdvi should belong to.

The closest replacement I see is collection-plaingeneric, but since that's included in even scheme-minimal it doesn't seem like we'd be accomplishing much.

Thoughts? Perhaps we just leave xdvi in collection-basic?

[veprbl]

By the way, here is a relevant snapshot of pkgs.nix with the original hashes:
https://gist.github.com/veprbl/3dc563802c97a95bcdc4eac6650ede7d

[veprbl]

I estimated some closure sizes of the scheme-basic (using du -sch $(nix-store -qR $(nix-build '<nixpkgs>' -A texlive.combined.scheme-basic))).

With luatex, metafont and xdvi: 275M
With metafont and xdvi, but without luatex: 263M
Without luatex, metafont and xdvi: 187M

I guess luatex was moved not because of its size, but for some other reason (maybe it is not useful without the rest of collection-luatex)

scheme-small without luatex, metafont and xdvi: 379M
scheme-medium without luatex, metafont and xdvi: 1.5G