Created
August 26, 2024 01:24
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| with builtins; | |
| with (import <nixpkgs> { }); | |
| with (import <nixpkgs> { }).lib.attrsets; | |
| with (import <nixpkgs> { }).stdenv; | |
| with rec { | |
| deepReadDir = path: | |
| let | |
| attrset = readDir path; | |
| go = name: value: | |
| if value == "directory" then | |
| deepReadDir (path + "/${name}") | |
| else | |
| path + "/${name}"; | |
| in mapAttrs go attrset; | |
| freezeFiles = path: freezeFileSet (deepReadDir path); | |
| freezeFileSet = attrset: | |
| let | |
| go = _: filepath: | |
| builtins.path { | |
| path = filepath; | |
| sha256 = narHash filepath; | |
| }; | |
| in mapAttrsRecursive go attrset; | |
| narHash = p: | |
| builtins.convertHash { | |
| hash = | |
| #hashFile "sha256" p; # it is flat while nix-freeze-files uses recursive. | |
| readFile (hashPath p); | |
| toHashFormat = "nix32"; | |
| hashAlgo = "sha256"; | |
| }; | |
| hashPath = p: | |
| mkDerivation { | |
| __contentAddressed = true; | |
| name = baseNameOf p + "-hashPath"; | |
| src = dirOf p; | |
| buildInputs = [ nix ]; | |
| buildPhase = '' | |
| touch $out | |
| nix-hash --type sha256 --base32 ${baseNameOf p} | tr -d "\n" > $out | |
| ''; | |
| }; | |
| }; { | |
| inherit freezeFiles; | |
| } |
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