still not working

flake.lock

@@ -55,26 +55,6 @@
         "type": "github"
       }
     },
-    "devshell": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1722113426,
-        "narHash": "sha256-Yo/3loq572A8Su6aY5GP56knpuKYRvM2a1meP9oJZCw=",
-        "owner": "numtide",
-        "repo": "devshell",
-        "rev": "67cce7359e4cd3c45296fb4aaf6a19e2a9c757ae",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "devshell",
-        "type": "github"
-      }
-    },
     "emacs-overlay": {
       "inputs": {
         "flake-utils": "flake-utils",
@@ -2926,7 +2906,6 @@
     },
     "root": {
       "inputs": {
-        "devshell": "devshell",
         "emacs-overlay": "emacs-overlay",
         "flake-parts": "flake-parts",
         "home-manager": "home-manager",