40 lines
1.2 KiB
Nix
40 lines
1.2 KiB
Nix
{ pkgs, ... }: {
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environment.variables = {
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# Allow running of proprietary software.
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NIXPKGS_ALLOW_UNFREE = "1";
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# I use this env variable to get currently running architecture.
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NIX_CURRENT_SYSTEM = "${pkgs.stdenv.system}";
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};
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# Allow installation of proprietary software.
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nixpkgs.config.allowUnfree = true;
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# Deduplicate store automatically. Slows down switches a bit, but saves space.
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nix.settings.auto-optimise-store = true;
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# Extra configuration line-by-line:
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# 1. Allow use of flakes.
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# 2. When running GC, keep .drv files.
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# 3. When running GC, keep build dependencies.
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# 4. Run GC automatically when there's a 50 GB or less free space.
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nix.extraOptions = ''
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experimental-features = nix-command flakes
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keep-derivations = true
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keep-outputs = true
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min-free = ${toString 50 * 1000 * 1000 * 1000}
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'';
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# NOTE: Currently I run GC completely, but this setting (put above near min-free)
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# can stop GC when you hit 101 GB of free space available.
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# max-free = ${toString 101 * 1024 * 1024 * 1024}
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# NOTE: Enable this if you want to run GC on schedule. I instead use `min-free`.
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# nix.gc = {
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# automatic = true;
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# dates = "weekly";
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# options = "--delete-older-than 30d";
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# persistent = true;
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# };
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}
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