Initial commit

modules/nixos/nixvim/default.nix

@@ -0,0 +1,106 @@
+{
+  inputs,
+  config,
+  lib,
+  ...
+}:
+
+let
+  cfg = config.programs.nixvim;
+
+  inherit (lib) mkDefault mkIf;
+in
+{
+  imports = [
+    inputs.nixvim.nixosModules.nixvim
+    ./plugins
+
+    ./spellfiles.nix
+  ];
+
+  config = {
+    programs.nixvim = {
+      enable = true; # Enable globally on NixOS
+      defaultEditor = mkDefault true;
+      viAlias = mkDefault true;
+      vimAlias = mkDefault true;
+
+      # Removed home-manager specific options like 'enableMan' which is handled differently or not needed in system module context
+      # Removed clipboard.providers.wl-copy as it's home-manager specific.
+      # System-wide clipboard integration for headless servers is less critical but can be added if needed.
+
+      # vim.g.*
+      globals = {
+        mapleader = mkDefault " ";
+      };
+
+      # vim.opt.*
+      opts = {
+        # behavior
+        cursorline = mkDefault true; # highlights the line under the cursor
+        mouse = mkDefault "a"; # enable mouse support
+        nu = mkDefault true; # line numbers
+        relativenumber = mkDefault true; # relative line numbers
+        scrolloff = mkDefault 20; # keeps some context above/below cursor
+        signcolumn = mkDefault "yes"; # reserve space for signs (e.g., GitGutter)
+        undofile = mkDefault true; # persistent undo
+        updatetime = mkDefault 500; # ms to wait for trigger an event (default 4000ms)
+        wrap = mkDefault true; # wraps text if it exceeds the width of the window
+
+        # search
+        ignorecase = mkDefault true; # ignore case in search patterns
+        smartcase = mkDefault true; # smart case
+        incsearch = mkDefault true; # incremental search
+        hlsearch = mkDefault true; # highlight search
+
+        # windows
+        splitbelow = mkDefault true; # new windows are created below current
+        splitright = mkDefault true; # new windows are created to the right of current
+        equalalways = mkDefault true; # window sizes are automatically updated.
+
+        # tabs
+        expandtab = mkDefault true; # convert tabs into spaces
+        shiftwidth = mkDefault 2; # number of spaces to use for each step of (auto)indent
+        smartindent = mkDefault true; # smart autoindenting on new lines
+        softtabstop = mkDefault 2; # number of spaces in tab when editing
+        tabstop = mkDefault 2; # number of visual spaces per tab
+
+        # spell checking
+        spell = mkDefault true;
+        spelllang = mkDefault [
+          "en_us"
+          "de_20"
+        ];
+
+      };
+
+      # vim.diagnostic.config.*
+      diagnostic.settings = {
+        virtual_text = {
+          spacing = 4;
+          prefix = "●";
+          severity_sort = true;
+        };
+        signs = true;
+        underline = true;
+        update_in_insert = false;
+      };
+
+      extraConfigLua = ''
+        vim.cmd "set noshowmode"  -- Hides "--INSERT--" mode indicator
+      '';
+
+      keymaps = import ./keymaps.nix;
+    };
+
+    environment = {
+      variables = {
+        EDITOR = mkIf cfg.enable "nvim";
+        VISUAL = mkIf cfg.enable "nvim";
+      };
+      shellAliases = {
+        v = mkIf cfg.enable "nvim";
+      };
+    };
+  };
+}

modules/nixos/nixvim/keymaps.nix

@@ -0,0 +1,347 @@
+[
+  # cursor navigation
+  {
+    # scroll down, recenter
+    key = "<C-d>";
+    action = "<C-d>zz";
+    mode = "n";
+  }
+  {
+    # scroll up, recenter
+    key = "<C-u>";
+    action = "<C-u>zz";
+    mode = "n";
+  }
+
+  # searching
+  {
+    # center cursor after search next
+    key = "n";
+    action = "nzzzv";
+    mode = "n";
+  }
+  {
+    # center cursor after search previous
+    key = "N";
+    action = "Nzzzv";
+    mode = "n";
+  }
+  {
+    # ex command
+    key = "<leader>pv";
+    action = "<cmd>Ex<CR>";
+    mode = "n";
+  }
+
+  # search and replace
+  {
+    # search and replace word under cursor
+    key = "<leader>s";
+    action = ":%s/<C-r><C-w>/<C-r><C-w>/gI<Left><Left><Left>";
+    mode = "n";
+  }
+  # search and replace selected text
+  {
+    key = "<leader>s";
+    action = "y:%s/<C-r>0/<C-r>0/gI<Left><Left><Left>";
+    mode = "v";
+  }
+
+  # clipboard operations
+  {
+    # copy to system clipboard in visual mode
+    key = "<C-c>";
+    action = ''"+y '';
+    mode = "v";
+  }
+  {
+    # paste from system clipboard in visual mode
+    key = "<C-v>";
+    action = ''"+p '';
+    mode = "v";
+  }
+  {
+    # yank to system clipboard
+    key = "<leader>Y";
+    action = "+Y";
+    mode = "n";
+  }
+  {
+    # replace selected text with clipboard content
+    key = "<leader>p";
+    action = "_dP";
+    mode = "x";
+  }
+  {
+    # delete without copying to clipboard
+    key = "<leader>d";
+    action = "_d";
+    mode = [
+      "n"
+      "v"
+    ];
+  }
+
+  # line operations
+  {
+    # move lines down in visual mode
+    key = "J";
+    action = ":m '>+1<CR>gv=gv";
+    mode = "v";
+  }
+  {
+    # move lines up in visual mode
+    key = "K";
+    action = ":m '<-2<CR>gv=gv";
+    mode = "v";
+  }
+  {
+    # join lines
+    key = "J";
+    action = "mzJ`z";
+    mode = "n";
+  }
+
+  # quickfix
+  {
+    # Run make command
+    key = "<leader>m";
+    action = "<cmd>:make<CR>";
+    mode = "n";
+  }
+  {
+    # previous quickfix item
+    key = "<C-A-J>";
+    action = "<cmd>cprev<CR>zz";
+    mode = "n";
+  }
+  {
+    # next quickfix item
+    key = "<C-A-K>";
+    action = "<cmd>cnext<CR>zz";
+    mode = "n";
+  }
+
+  # location list navigation
+  {
+    # previous location list item
+    key = "<leader>j";
+    action = "<cmd>lprev<CR>zz";
+    mode = "n";
+  }
+  {
+    # next location list item
+    key = "<leader>k";
+    action = "<cmd>lnext<CR>zz";
+    mode = "n";
+  }
+
+  # disabling keys
+  {
+    # disable the 'Q' key
+    key = "Q";
+    action = "<nop>";
+    mode = "n";
+  }
+
+  # text selection
+  {
+    # select whole buffer
+    key = "<C-a>";
+    action = "ggVG";
+    mode = "n";
+  }
+
+  # window operations
+  {
+    # focus next window
+    key = "<C-j>";
+    action = ":wincmd W<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # focus previous window
+    key = "<C-k>";
+    action = ":wincmd w<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+
+  # window size adjustments
+  {
+    # increase window width
+    key = "<C-l>";
+    action = ":vertical resize +5<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # decrease window width
+    key = "<C-h>";
+    action = ":vertical resize -5<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+
+  # window closing and opening
+  {
+    # close current window
+    key = "<leader-S>c";
+    action = ":q<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # new vertical split at $HOME
+    key = "<leader>n";
+    action = ":vsp $HOME<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+
+  # window split orientation toggling
+  {
+    # toggle split orientation
+    key = "<leader>t";
+    action = ":wincmd T<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+
+  # spell checking
+  {
+    # toggle spell checking
+    key = "<leader>ss";
+    action = ":setlocal spell!<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # switch to english spell checking
+    key = "<leader>se";
+    action = ":setlocal spelllang=en_us<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # switch to german spell checking
+    key = "<leader>sg";
+    action = ":setlocal spelllang=de_20<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # move to next misspelling
+    key = "]s";
+    action = "]szz";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # move to previous misspelling
+    key = "[s";
+    action = "[szz";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # correction suggestions for a misspelled word
+    key = "z=";
+    action = "z=";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # adding words to the dictionary
+    key = "zg";
+    action = "zg";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+
+  # buffer navigation
+  {
+    # next buffer
+    key = "<C-S-J>";
+    action = ":bnext<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # previous buffer
+    key = "<C-S-K>";
+    action = ":bprevious<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+  {
+    # close current buffer
+    key = "<leader>bd";
+    action = ":bdelete<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+
+  {
+    # apply code action
+    key = "<leader>ca";
+    action = ":lua vim.lsp.buf.code_action()<CR>";
+    options = {
+      noremap = true;
+      silent = true;
+    };
+    mode = "n";
+  }
+]

modules/nixos/nixvim/plugins/cmp.nix

@@ -0,0 +1,54 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.cmp;
+
+  inherit (lib) mkDefault mkIf;
+in
+{
+  programs.nixvim = {
+    plugins = {
+      cmp = {
+        enable = mkDefault true;
+        settings = {
+          autoEnableSources = mkDefault true;
+          experimental.ghost_text = mkDefault true;
+          snippet.expand = mkDefault "luasnip";
+          formatting.fields = mkDefault [
+            "kind"
+            "abbr"
+            "menu"
+          ];
+          sources = [
+            { name = "git"; }
+            { name = "nvim_lsp"; }
+            {
+              name = "buffer";
+              option.get_bufnrs.__raw = "vim.api.nvim_list_bufs";
+              keywordLength = 3;
+            }
+            {
+              name = "path";
+              keywordLength = 3;
+            }
+            { name = "luasnip"; }
+          ];
+          mapping = {
+            "<C-Space>" = "cmp.mapping.complete()";
+            "<C-d>" = "cmp.mapping.scroll_docs(-4)";
+            "<C-e>" = "cmp.mapping.close()";
+            "<C-f>" = "cmp.mapping.scroll_docs(4)";
+            "<C-CR>" = "cmp.mapping.confirm({ select = true })";
+            "<S-Tab>" = "cmp.mapping(cmp.mapping.select_prev_item(), {'i', 's'})";
+            "<Tab>" = "cmp.mapping(cmp.mapping.select_next_item(), {'i', 's'})";
+          };
+        };
+      };
+      cmp-cmdline = mkIf plugin.enable { enable = mkDefault false; }; # autocomplete for cmdline
+      cmp_luasnip = mkIf plugin.enable { enable = mkDefault true; };
+      luasnip = mkIf plugin.enable { enable = mkDefault true; };
+      cmp-treesitter = mkIf (plugin.enable && cfg.plugins.treesitter.enable) { enable = mkDefault true; };
+    };
+  };
+}

modules/nixos/nixvim/plugins/default.nix

@@ -0,0 +1,18 @@
+{ lib, ... }:
+
+{
+  imports = [
+    ./cmp.nix
+    ./lsp.nix
+    ./lualine.nix
+    ./telescope.nix
+    # ./treesitter.nix # HOTFIX: does not build
+    ./trouble.nix
+  ];
+
+  config.programs.nixvim.plugins = {
+    markdown-preview.enable = lib.mkDefault true;
+    # warning: Nixvim: `plugins.web-devicons` was enabled automatically because the following plugins are enabled. This behaviour is deprecated. Please explicitly define `plugins.web-devicons.enable`
+    web-devicons.enable = true;
+  };
+}

modules/nixos/nixvim/plugins/lsp.nix

@@ -0,0 +1,69 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.lsp;
+
+  inherit (lib) mkDefault mkIf optional;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins = {
+        lsp-format = mkIf plugin.enable { enable = mkDefault true; };
+
+        lsp = {
+          enable = mkDefault true;
+          postConfig = "";
+          keymaps = {
+            silent = mkDefault true;
+            diagnostic = mkDefault {
+              # Navigate in diagnostics
+              "<leader>k" = "goto_prev";
+              "<leader>j" = "goto_next";
+            };
+
+            lspBuf = mkDefault {
+              gd = "definition";
+              gD = "references";
+              gt = "type_definition";
+              gi = "implementation";
+              K = "hover";
+              "<F2>" = "rename";
+            };
+          };
+
+          servers = {
+            bashls.enable = mkDefault true;
+            clangd.enable = mkDefault true;
+            cssls.enable = mkDefault true;
+            dockerls.enable = mkDefault true;
+            gopls.enable = mkDefault true;
+            html.enable = mkDefault true;
+            jsonls.enable = mkDefault true;
+            nixd.enable = mkDefault true;
+            pyright.enable = mkDefault true;
+            rust_analyzer = {
+              enable = mkDefault true;
+              installCargo = mkDefault true;
+              installRustc = mkDefault true;
+              settings.rustfmt.overrideCommand = mkDefault [
+                "${pkgs.rustfmt}/bin/rustfmt --edition 2021" # --config tab_spaces=2"
+              ];
+            };
+            texlab.enable = mkDefault true;
+            vhdl_ls.enable = mkDefault true;
+            yamlls.enable = mkDefault true;
+          };
+        };
+      };
+    };
+
+    home.packages = optional (cfg.enable && plugin.servers.nixd.enable) pkgs.nixfmt;
+  };
+}

modules/nixos/nixvim/plugins/lualine.nix

@@ -0,0 +1,18 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.lualine;
+
+  inherit (lib) mkDefault;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins.lualine = {
+        enable = mkDefault true;
+        settings.options.icons_enabled = mkDefault false;
+      };
+    };
+  };
+}

modules/nixos/nixvim/plugins/telescope.nix

@@ -0,0 +1,52 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.telescope;
+
+  inherit (lib) mkDefault optionals;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins.telescope = {
+        enable = mkDefault true;
+        extensions = {
+          file-browser.enable = mkDefault true;
+          fzf-native.enable = mkDefault true;
+          live-grep-args.enable = mkDefault true;
+          manix.enable = mkDefault true;
+        };
+        keymaps = mkDefault {
+          "<C-e>" = "file_browser";
+          "<C-p>" = "git_files";
+          "<leader>bl" = "buffers";
+          "<leader>fd" = "diagnostics";
+          "<leader>ff" = "find_files";
+          "<leader>fg" = "live_grep";
+          "<leader>fh" = "help_tags";
+          "<leader>fm" = "man_pages";
+          "<leader>fn" = "manix";
+          "<leader>fo" = "oldfiles";
+          "<space>fb" = "file_browser";
+        };
+      };
+      keymaps = optionals plugin.enable [
+        {
+          key = "<C-f>";
+          action = ":lua require('telescope').extensions.live_grep_args.live_grep_args()<CR>";
+          mode = "n";
+        }
+      ];
+    };
+
+    home.packages = optionals plugin.enable [
+      pkgs.ripgrep # for "live_grep"
+    ];
+  };
+}

modules/nixos/nixvim/plugins/treesitter.nix

@@ -0,0 +1,42 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.treesitter;
+
+  cc = "${pkgs.gcc}/bin/gcc";
+
+  inherit (lib) mkDefault mkIf;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins.treesitter = {
+        enable = mkDefault true;
+        nixvimInjections = mkDefault true;
+        settings = {
+          folding.enable = mkDefault true;
+          highlight.enable = mkDefault true;
+          indent.enable = mkDefault true;
+        };
+      };
+      plugins.treesitter-context = mkIf plugin.enable { enable = mkDefault true; };
+      plugins.treesitter-textobjects = mkIf plugin.enable { enable = mkDefault true; };
+    };
+
+    # Fix for: ERROR `cc` executable not found.
+    home.sessionVariables = mkIf plugin.enable {
+      CC = mkDefault cc;
+    };
+
+    # Fix for: WARNING `tree-sitter` executable not found
+    home.packages = mkIf plugin.enable [
+      plugin.package
+    ];
+  };
+}

modules/nixos/nixvim/plugins/trouble.nix

@@ -0,0 +1,43 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.programs.nixvim;
+  plugin = cfg.plugins.trouble;
+
+  inherit (lib) mkDefault mkIf;
+in
+{
+  config = {
+    programs.nixvim = {
+      plugins.trouble = {
+        enable = mkDefault true;
+      };
+      keymaps = mkIf plugin.enable [
+        {
+          mode = "n";
+          key = "<leader>xq";
+          action = "<CMD>Trouble qflist toggle<CR>";
+          options = {
+            desc = "Trouble quifick toggle";
+          };
+        }
+        {
+          mode = "n";
+          key = "<leader>xl";
+          action = "<CMD>Trouble loclist toggle<CR>";
+          options = {
+            desc = "Trouble loclist toggle";
+          };
+        }
+        {
+          mode = "n";
+          key = "<leader>xx";
+          action = "<CMD>Trouble diagnostics toggle<CR>";
+          options = {
+            desc = "Trouble diagnostics toggle";
+          };
+        }
+      ];
+    };
+  };
+}

modules/nixos/nixvim/spellfiles.nix

@@ -0,0 +1,26 @@
+{ config, pkgs, ... }:
+
+let
+  spellDir = config.xdg.dataHome + "/nvim/site/spell";
+  baseUrl = "http://ftp.de.vim.org/runtime/spell";
+in
+{
+  home.file = {
+    de-spl = {
+      enable = true;
+      source = pkgs.fetchurl {
+        url = baseUrl + "/de.utf-8.spl";
+        sha256 = "sha256-c8cQfqM5hWzb6SHeuSpFk5xN5uucByYdobndGfaDo9E=";
+      };
+      target = spellDir + "/de.utf8.spl";
+    };
+    de-sug = {
+      enable = true;
+      source = pkgs.fetchurl {
+        url = baseUrl + "/de.utf-8.sug";
+        sha256 = "sha256-E9Ds+Shj2J72DNSopesqWhOg6Pm6jRxqvkerqFcUqUg=";
+      };
+      target = spellDir + "/de.utf8.sug";
+    };
+  };
+}