A simple helper that makes it easy to package Nu scripts with Nix, including inline dependency declarations for external commands and other packaged scripts.
flake
nu
nushell
nix
refactoring
+16
-11
+16
-11
mkNuScript.nix
+16
-11
mkNuScript.nix
···
3
3
lib ? pkgs.lib,
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4
self ? null,
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5
inputs ? { },
6
-
src,
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-
file,
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-
name ? baseNameOf (lib.removeSuffix ".nu" file),
6
+
script,
7
+
name ? lib.removeSuffix ".nu" (baseNameOf script),
8
+
version ? null,
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9
meta ? { },
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10
system ? pkgs.stdenv.hostPlatform.system,
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11
nushell ? pkgs.nushell,
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+
extraPackages ? [ ],
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}:
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let
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resolveDependency =
···
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else
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pkgs.${dep};
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32
32
-
extraDependencies =
33
+
externalDependencies =
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let
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-
script = builtins.readFile file;
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-
lines = lib.splitString "\n" script;
35
+
scriptText = builtins.readFile script;
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+
lines = lib.splitString "\n" scriptText;
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start = lib.lists.findFirstIndex (line: line == "# START: External Dependencies") null lines;
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end = lib.lists.findFirstIndex (line: line == "# END: External Dependencies") null lines;
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deps =
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if (start != null && end != null) then
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-
map (line: lib.removePrefix "# " (lib.removePrefix "# " line)) (
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+
map (line: lib.removePrefix "# " line) (
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builtins.filter (line: lib.hasPrefix "#" line && line != "#") (
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lib.sublist (start + 1) (end - start - 1) lines
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)
···
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in
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map resolveDependency deps;
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50
-
deps = extraDependencies ++ [ nushell ];
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+
deps = externalDependencies ++ extraDependencies ++ [ nushell ];
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in
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pkgs.stdenv.mkDerivation {
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-
inherit name src;
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-
nativeBuildInputs = with pkgs; [ makeWrapper ];
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+
pname = name;
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+
inherit version;
56
+
57
+
nativeBuildInputs = [ pkgs.makeWrapper ];
58
+
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59
installPhase = ''
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runHook preInstall
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61
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mkdir -p $out/bin
59
-
cp $src/${file} $out/bin/${name}
63
+
cp ${script} $out/bin/${name}
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chmod +x $out/bin/${name}
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65
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substituteInPlace $out/bin/${name} \
···
67
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runHook postInstall
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'';
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+
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meta = meta // {
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mainProgram = name; # override so that mainProgram always matches what the name of the script in $out/bin is
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77
};