neovim-flake/modules/languages/java.nix

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{
pkgs,
config,
lib,
...
}: let
inherit (lib) isList nvim mkEnableOption mkOption types mkIf mkMerge getExe;
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cfg = config.vim.languages.java;
in {
options.vim.languages.java = {
enable = mkEnableOption "Java language support";
treesitter = {
enable = mkEnableOption "Java treesitter" // {default = config.vim.languages.enableTreesitter;};
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package = nvim.types.mkGrammarOption pkgs "java";
};
lsp = {
enable = mkEnableOption "Java LSP support (java-language-server)" // {default = config.vim.languages.enableLSP;};
package = mkOption {
description = "java language server package, or the command to run as a list of strings";
example = ''[lib.getExe pkgs.jdt-language-server "-data" "~/.cache/jdtls/workspace"]'';
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type = with types; either package (listOf str);
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default = pkgs.jdt-language-server;
};
};
};
config = mkIf cfg.enable (mkMerge [
(mkIf cfg.lsp.enable {
vim.lsp.lspconfig.enable = true;
vim.lsp.lspconfig.sources.jdtls = ''
lspconfig.jdtls.setup {
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capabilities = capabilities,
on_attach = default_on_attach,
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cmd = ${
if isList cfg.lsp.package
then nvim.lua.expToLua cfg.lsp.package
else ''{"${getExe cfg.lsp.package}", "-data", vim.fn.stdpath("cache").."/jdtls/workspace"}''
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},
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}
'';
})
(mkIf cfg.treesitter.enable {
vim.treesitter.enable = true;
vim.treesitter.grammars = [cfg.treesitter.package];
})
]);
}