pkgsMusl, pkgsi686Linux, pkgsStatic: fix infinite recursion with overlays #58246
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…lays
Consider example:
$ nix-instantiate ./nixos -A system --arg configuration '
{
boot.isContainer = true;
nixpkgs.overlays = [ (self: super: {
nix = self.pkgsStatic.nix;
}) ];
}'
When resolving package through overlays, we figure out that
nix == self.pkgsStatic.nix
=>
nix == (import <nixpkgs> { inherit overlays; }).nix
=>
nix == (import <nixpkgs> { overlays = [(self: super: { nix = self.pkgsStatic.nix; })];}).nix
and we enter infinite recursion of nixpkgs evaluations.
The proper fix should terminate recursion by assigning self fixpoint
to inner custom package set. But I get infinite recursion somehow, so
I use `super`. It is less correct modulo deep custom overrides, but behaves
correctly for simple cases and doesn't OOM evaluator.
Fixes NixOS#57984
GrahamcOfBorg
added
10.rebuild-darwin: 0
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This should probably be backported to 18.09 and 19.03. |
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I feel like the need for this exposes a weakness in the current design, but it's fine for now. |
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@matthewbauer ok, I'll do it for 19.03, but also have to backport 83ae1ff |
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But does this happen on 19.03? Did it happen before 83ae1ff? Maybe that commit was not really a noop and `inherit overlays` is enough there?
(I was planning to investigate in the next bit of free time, but that's not going to be today, it seems, so sorry for not being constructive.)
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I see, good to know, thanks.
Then backporting a piece of 83ae1ff this depends on (i.e. without the big comment about `config` hunk) LGTM.
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Consider example:
When resolving package through overlays, we figure out that
and we enter infinite recursion of nixpkgs evaluations.
The proper fix should terminate recursion by assigning self fixpoint
to inner custom package set. But I get infinite recursion somehow, so
I use
super. It is less correct modulo deep custom overrides, but behavescorrectly for simple cases and doesn't OOM evaluator.
Fixes #57984