feat: nixvim config

currently only for dnsc-air. can simply be imported in other hosts

modules/nixvim/keybindings.nix

@@ -0,0 +1,138 @@
+{
+  plugins.which-key.enable = true;
+  keymaps = [
+    # Open
+    {
+      mode = [ "n" ];
+      key = "<leader>od";
+      action = "<cmd>vsplit | lua vim.lsp.buf.definition()<cr>";
+      options.desc = "Go to definition in other window";
+    }
+
+    # Buffer
+    {
+      mode = [ "n" ];
+      key = "<leader>bn";
+      action = "<cmd>bn<cr>";
+      options.desc = "Move to next buffer";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>bp";
+      action = "<cmd>bp<cr>";
+      options.desc = "Move to previous buffer";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>bk";
+      action = "<cmd>bn<cr>";
+      options.desc = "Kill buffer and window";
+    }
+
+    # File
+    {
+      mode = [ "n" ];
+      key = "<leader>fn";
+      action = "<cmd>enew<cr>";
+      options.desc = "Create a new file";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>fs";
+      action = "<cmd>w<cr>";
+      options.desc = "Save currently opened file";
+    }
+
+    # Quit
+    {
+      mode = [ "n" ];
+      key = "<leader>qq";
+      action = "<cmd>qa!<cr>";
+      options.desc = "Leave neovim";
+    }
+
+    # Diagnostics
+    {
+      mode = [ "n" ];
+      key = "<leader>ta";
+      action = "<cmd>TodoQuickFix<cr>";
+      options.desc = "Show all todo comments";
+    }
+
+    # Window
+    {
+      mode = [ "n" ];
+      key = "<leader>w+";
+      action = ":vertical resize +4<cr>";
+      options.desc = "Increase window size";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>w-";
+      action = ":vertical resize -4<cr>";
+      options.desc = "Decrease window size";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wx";
+      action = ":bd<cr>";
+      options.desc = "Kill active window and buffer";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wh";
+      action = "<C-W>h";
+      options.desc = "Move to window on left";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wj";
+      action = "<C-W>j";
+      options.desc = "Move to window on bottom";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wk";
+      action = "<C-W>k";
+      options.desc = "Move to window on top";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wl";
+      action = "<C-W>l";
+      options.desc = "Move to window on right";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>ws";
+      action = "<cmd>sp<cr>";
+      options.desc = "Split windows horizontally";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wv";
+      action = "<cmd>vsp<cr>";
+      options.desc = "Split windows vertically";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>wd";
+      action = "<cmd>close<cr>";
+      options.desc = "Delete window only";
+    }
+
+    # Config
+    {
+      mode = [ "n" ];
+      key = "<leader>xn";
+      action = "<cmd>set number relativenumber<cr>";
+      options.desc = "Show relative numbers";
+    }
+    {
+      mode = [ "n" ];
+      key = "<leader>xr";
+      action = "<cmd>source $MYVIMRC<cr>";
+      options.desc = "Reload config";
+    }
+  ];
+}