Simplified nix flake for build, dev shell, and cached build

.gitignore

@@ -6,3 +6,4 @@ dist
 lsp-ai.log
 .vsix
 lsp-ai-chat.md
+result

flake.nix

@@ -0,0 +1,100 @@
+{
+  description = "LSP-AI: Open-source language server for AI-powered functionality";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      rust-overlay,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+          config.allowUnfree = true;
+        };
+        rustVersion = pkgs.rust-bin.stable.latest.default;
+
+        commonBuildInputs = with pkgs; [
+          openssl
+          zlib
+        ];
+
+        commonNativeBuildInputs = with pkgs; [
+          pkg-config
+          cmake
+          rustVersion
+          perl
+        ];
+
+      in
+      rec {
+        packages = rec {
+          default = pkgs.rustPlatform.buildRustPackage {
+            pname = "lsp-ai";
+            version = "0.7.0";
+
+            src = ./.;
+
+            cargoLock = {
+              lockFile = ./Cargo.lock;
+              allowBuiltinFetchGit = true;
+            };
+
+            nativeBuildInputs = commonNativeBuildInputs;
+            buildInputs = commonBuildInputs;
+
+            doCheck = false;
+
+            meta = with pkgs.lib; {
+              description = "An open-source language server that serves as a backend for AI-powered functionality";
+              homepage = "https://github.com/SilasMarvin/lsp-ai";
+              license = licenses.mit;
+              maintainers =
+                [
+                  # Add maintainers here
+                ];
+            };
+          };
+
+          devPackage = default.overrideAttrs (oldAttrs: {
+            name = "lsp-ai-dev";
+
+            buildPhase = ''
+              export CARGO_HOME="/tmp/.cargo"
+              export RUSTUP_HOME="/tmp/.rustup"
+              cargo build
+            '';
+
+            installPhase = ''
+              mkdir -p $out/bin
+              cp target/debug/lsp-ai $out/bin/
+            '';
+          });
+        };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = [ packages.default ];
+          packages = with pkgs; [
+            rust-analyzer
+            clippy
+            rustfmt
+          ];
+
+          shellHook = ''
+            export CARGO_HOME="/tmp/.cargo"
+            export RUSTUP_HOME="/tmp/.rustup"
+          '';
+        };
+      }
+    );
+}