feat(nvim): add Rust LSP support

configs/nixos/modules/shell/nvim/default.nix

@@ -142,6 +142,54 @@ in
         ];
 
         plugins = {
+          blink-cmp = {
+            enable = true;
+            setupLspCapabilities = true;
+            settings = {
+              keymap = {
+                preset = "default";
+                "<M-Space>" = [
+                  "show"
+                  "show_documentation"
+                  "hide_documentation"
+                ];
+              };
+              completion.documentation.auto_show = true;
+              signature.enabled = true;
+              sources.default = [
+                "lsp"
+                "path"
+                "snippets"
+                "buffer"
+              ];
+            };
+          };
+
+          lsp = {
+            enable = true;
+            inlayHints = true;
+            keymaps = {
+              silent = true;
+              diagnostic = {
+                "[d" = "goto_prev";
+                "]d" = "goto_next";
+              };
+              lspBuf = {
+                gd = "definition";
+                gD = "references";
+                K = "hover";
+                "<leader>ca" = "code_action";
+                "<leader>rn" = "rename";
+              };
+            };
+            servers.rust_analyzer = lib.mkIf config.modules.shell.rust.enable {
+              enable = true;
+              installCargo = false;
+              installRustc = false;
+              installRustfmt = false;
+            };
+          };
+
           gitsigns = {
             enable = true;
             settings.current_line_blame = false;