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by chriswarbo
1613 days ago
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> Jetbrains IDEA was updating very slowly and when I wanted to pin a version of it simply overriding version variable in the overlay was not enough - there were also some other linked variables. Emacs package from custom overlay constantly tried to compile itself, requiring me to check build status on hydra build system. The way I solve this is to import multiple versions of Nixpkgs, since they're all self-contained. For example, if I'm upgrading from Nixpkgs/NixOS 21.05 to 21.11, and I find that package 'foo' has broken, or been removed, I'll do this in an overlay: self: super: {
foo = self.nixpkgs2105.foo;
}
Where nixpkgs2105 is a pinned revision of the Nixpkgs repo, defined in another overlay. My current Nix config has pinned Nixpkgs versions going back to 2016. For example, here's a bunch of such overrides:https://github.com/Warbo/nix-config/blob/master/overrides/fi... At the moment I'm using niv to manage the pinned Nixpkgs versions (the 'repoXXXX' entries): https://github.com/Warbo/nix-helpers/blob/master/nix/sources... |
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