fix: devshell on darwin

Co-authored-by: thetayloredman <nutdriver716@gmail.com>

.envrc

@@ -2,7 +2,7 @@
 
 dotenv_if_exists
 
-if [ -f /etc/os-release ] && grep -q '^ID=nixos' /etc/os-release; then
+if command -v nix >/dev/null 2>&1; then
     use flake ".#${DIRENV_DEVSHELL:-default}"
 fi
 

flake.nix

@@ -38,6 +38,8 @@
       systems = [
         "x86_64-linux"
         "aarch64-linux"
+        # support untested but theoretically there
+        "aarch64-darwin"
       ];
     };
 }

nix/devshell.nix

@@ -12,19 +12,27 @@
       devShells.default = craneLib.devShell {
         packages = [
           self'.packages.rocksdb
-          pkgs.rust-jemalloc-sys-unprefixed
           pkgs.nodejs
-          pkgs.liburing
           pkgs.pkg-config
+        ]
+        ++ lib.optionals pkgs.stdenv.isLinux [
+          pkgs.liburing
+          pkgs.rust-jemalloc-sys-unprefixed
         ];
 
         env = {
           LIBCLANG_PATH = lib.makeLibraryPath [ pkgs.llvmPackages.libclang.lib ];
-          LD_LIBRARY_PATH = lib.makeLibraryPath [
+          LD_LIBRARY_PATH = lib.makeLibraryPath (
-            pkgs.liburing
+            [
-            pkgs.jemalloc
+              pkgs.stdenv.cc.cc.lib
-            pkgs.stdenv.cc.cc.lib
+            ]
-          ];
+            ++ lib.optionals pkgs.stdenv.isLinux [
+              pkgs.liburing
+              pkgs.jemalloc
+            ]
+          );
+        }
+        // lib.optionalAttrs pkgs.stdenv.isLinux {
           PKG_CONFIG_PATH = lib.makeSearchPath "lib/pkgconfig" [
             pkgs.liburing.dev
           ];