mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-21 05:04:00 +00:00
42c94d06fd
```
nix-repl> (pkgs.htop.overrideAttrs { pname = "hello-overriden"; }).pname
error:
… while evaluating a branch condition
at /nix/store/phn5cahwacv9wjgalygw62x8l4xbl6x3-source/lib/customisation.nix:86:7:
85| in
86| if builtins.isAttrs result then
| ^
87| result // {
… while calling the 'isAttrs' builtin
at /nix/store/phn5cahwacv9wjgalygw62x8l4xbl6x3-source/lib/customisation.nix:86:10:
85| in
86| if builtins.isAttrs result then
| ^
87| result // {
(stack trace truncated; use '--show-trace' to show the full trace)
error: attempt to call something which is not a function but a set
at /nix/store/phn5cahwacv9wjgalygw62x8l4xbl6x3-source/pkgs/stdenv/generic/make-derivation.nix:58:21:
57| f = self: super:
58| let x = f0 super;
| ^
59| in
```
67 lines
2.1 KiB
Nix
67 lines
2.1 KiB
Nix
{ lib, pkgs, stdenvNoCC }:
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let
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tests =
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let
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p = pkgs.python3Packages.xpybutil.overridePythonAttrs (_: { dontWrapPythonPrograms = true; });
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in
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[
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({
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name = "overridePythonAttrs";
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expr = !lib.hasInfix "wrapPythonPrograms" p.postFixup;
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expected = true;
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})
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({
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name = "repeatedOverrides-pname";
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expr = repeatedOverrides.pname == "a-better-hello-with-blackjack";
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expected = true;
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})
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({
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name = "repeatedOverrides-entangled-pname";
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expr = repeatedOverrides.entangled.pname == "a-better-figlet-with-blackjack";
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expected = true;
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})
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({
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name = "overriding-using-only-attrset";
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expr = (pkgs.hello.overrideAttrs { pname = "hello-overriden"; }).pname == "hello-overriden";
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expected = true;
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})
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({
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name = "overriding-using-only-attrset-no-final-attrs";
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expr = ((stdenvNoCC.mkDerivation { pname = "hello-no-final-attrs"; }).overrideAttrs { pname = "hello-no-final-attrs-overridden"; }).pname == "hello-no-final-attrs-overridden";
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expected = true;
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})
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];
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addEntangled = origOverrideAttrs: f:
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origOverrideAttrs (
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lib.composeExtensions f (self: super: {
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passthru = super.passthru // {
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entangled = super.passthru.entangled.overrideAttrs f;
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overrideAttrs = addEntangled self.overrideAttrs;
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};
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})
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);
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entangle = pkg1: pkg2: pkg1.overrideAttrs (self: super: {
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passthru = super.passthru // {
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entangled = pkg2;
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overrideAttrs = addEntangled self.overrideAttrs;
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};
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});
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example = entangle pkgs.hello pkgs.figlet;
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overrides1 = example.overrideAttrs (_: super: { pname = "a-better-${super.pname}"; });
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repeatedOverrides = overrides1.overrideAttrs (_: super: { pname = "${super.pname}-with-blackjack"; });
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in
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stdenvNoCC.mkDerivation {
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name = "test-overriding";
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passthru = { inherit tests; };
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buildCommand = ''
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touch $out
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'' + lib.concatMapStringsSep "\n" (t: "([[ ${lib.boolToString t.expr} == ${lib.boolToString t.expected} ]] && echo '${t.name} success') || (echo '${t.name} fail' && exit 1)") tests;
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}
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