Goal is to make generateLuarocksConfig appropriate in more scenarios, in my case, to generate rocks.nvim luarocks config
We override the luarocks default for rocks_subdir to avoid conflicts when creating lua environments but it is not appropriate for other scenarios
so let's not default to it in the "lib" function.
I tried using luaLib.generateLuarocksConfig outside nixpkgs, to generate a rocks.nvim config but it adds a `local_cache = ""` configuration line that is painful to remove so let's not add it in the first place, and let the caller set it if needed.
There is an arbitrary mapping being done right now between
nixpkgs lua infrastructre and luarocks config schema.
This is confusing if you use lua so let's make it possible to use the
lua names in the nixpkgs, thanks to the lib.generators.toLua convertor.
The only nixpkgs thing to remember should be to put the config into `luarocksConfig`
`buildLuarocksPackage.extraVariables` should become `buildLuarocksPackage.luarocksConfig.variables`
I wanted to improve the generated luarocks config.
The current system appends a string to it, this commit allows to pass
arbitrary nix code and have it autoconverted to lua along with the
default settings in the luarocks config.
lua.withPackages only brings packages that have passthru.luaModule, which was not the case of luarocks (because it's built differently than other lua packages). We call toLuaModule on luarocks so that it is brought in a lua.withPackages call
it makes overriding easier, instead of having to know internals to
decide which of `sqlite = prev.luaLib.overrideLuarocks prev.sqlite (drv: {` or
`sqlite = prev.sqlite.overrideAttrs (drv: {` just use the latter
- luarocks-nix: bumped to pass args too, `package_X = callPackage ...`.
It allows to remove the annoying `with self`.
This new version disables tests (because broken) and now emits derivation
with a callPackage in front.
- replaced X.override with lib.overrideLuarocks, it should be used
whenever buildInputs/extraVariables is changed since it impacts the
generated luarocks config.
Once structured attributes are in, it will be easier to have the
luarocks config generated by a hook and we probably will be able to
replace all overrideLuarocks by overrideAttrs.
- moved lua hooks to a specific folder as I foresee to add more
- moved generateLuarocksConfig to lib
- fix getLuaPath
- removed the useless rockspecDir
Goal is to improve separation between packages and utilities.
Can help with autocompletion/navigate nixpkgs faster.
Also it will help standardize how LUA_PATH is exported across packages,
so that one can more easily make lua changes across nixpkgs (for
instance changing where lua modules are installed).
