Switch `devenv` dependency in the nix development environment to the latest release (instead of the development branch) (#16063)

changelog.d/16063.misc

@@ -0,0 +1 @@
+Fix building the nix development environment on MacOS systems.

flake.lock

@@ -8,16 +8,16 @@
         "pre-commit-hooks": "pre-commit-hooks"
       },
       "locked": {
-        "lastModified": 1690534632,
-        "narHash": "sha256-kOXS9x5y17VKliC7wZxyszAYrWdRl1JzggbQl0gyo94=",
+        "lastModified": 1688058187,
+        "narHash": "sha256-ipDcc7qrucpJ0+0eYNlwnE+ISTcq4m03qW+CWUshRXI=",
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "6568e7e485a46bbf32051e4d6347fa1fed8b2f25",
+        "rev": "c8778e3dc30eb9043e218aaa3861d42d4992de77",
         "type": "github"
       },
       "original": {
         "owner": "cachix",
-        "ref": "main",
+        "ref": "v0.6.3",
         "repo": "devenv",
         "type": "github"
       }

flake.nix

@@ -45,7 +45,7 @@
     # Output a development shell for x86_64/aarch64 Linux/Darwin (MacOS).
     systems.url = "github:nix-systems/default";
     # A development environment manager built on Nix. See https://devenv.sh.
-    devenv.url = "github:cachix/devenv/main";
+    devenv.url = "github:cachix/devenv/v0.6.3";
     # Rust toolchain.
     rust-overlay.url = "github:oxalica/rust-overlay";
   };