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lib/modules: assert that specialArgs has a valid lib

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End-users have ran into issues before when attempting to re-use a `lib`
from elsewhere in nixvim's configuration.

If a `lib` without the `nixvim` extension is used, this assertion will
inform the user that this isn't supported.

In the future we can also provide better ways for end-users to overlay
their own lib with nixvim's extensions, but this is not yet implemented.

Co-authored-by: Gaétan Lepage <33058747+GaetanLepage@users.noreply.github.com>
This commit is contained in:
Matt Sturgeon 2024-09-27 01:02:57 +01:00
parent 5020e58798
commit 6b0c5d594a
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lib/modules.nix
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@ -23,6 +23,11 @@ in
# NOTE: this argument was always marked as experimental # NOTE: this argument was always marked as experimental
assert lib.assertMsg (!args ? "check") assert lib.assertMsg (!args ? "check")
"`evalNixvim`: passing `check` is no longer supported. Checks are now done when evaluating `config.build.package` and can be avoided by using `config.build.packageUnchecked` instead."; "`evalNixvim`: passing `check` is no longer supported. Checks are now done when evaluating `config.build.package` and can be avoided by using `config.build.packageUnchecked` instead.";
# Ensure a suitable `lib` is used
# TODO: offer a lib overlay that end-users could use to apply nixvim's extensions to their own `lib`
assert lib.assertMsg (extraSpecialArgs ? lib -> extraSpecialArgs.lib ? nixvim) ''
Nixvim requires a lib that includes some custom extensions, however the `lib` from `specialArgs` does not have a `nixvim` attr.
Remove `lib` from nixvim's `specialArgs` or ensure you apply nixvim's extensions to your `lib`.'';
lib.evalModules { lib.evalModules {
modules = [ ../modules/top-level ] ++ modules; modules = [ ../modules/top-level ] ++ modules;
specialArgs = { specialArgs = {