diff --git a/.github/workflows/update-snapshot.yml b/.github/workflows/update-snapshot.yml
deleted file mode 100644
index 2d47363..0000000
--- a/.github/workflows/update-snapshot.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-name: Update emacs snapshots with flake
-
-on:
-  schedule:
-    - cron: "15 10 1 * *"
-  workflow_dispatch:
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-      with:
-        ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
-    - uses: cachix/install-nix-action@v21
-      with:
-        github_access_token: ${{ secrets.GITHUB_TOKEN }}
-    - name: Update emacs snapshots
-      run: nix flake update
-    - name: Create Pull Request
-      uses: peter-evans/create-pull-request@v5
-      with:
-        title: 'Emacs snapshots update'
-        body: ''
-        commit-message: 'Update emacs snapshots'
-        branch: emacs-snapshot
-        branch-suffix: timestamp
-        delete-branch: true
-        add-paths: flake*
diff --git a/flake.lock b/flake.lock
deleted file mode 100644
index 2e7b728..0000000
--- a/flake.lock
+++ /dev/null
@@ -1,398 +0,0 @@
-{
-  "nodes": {
-    "emacs-23-4": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-OzqhctHmsk30IfS61czooF+1LShToeT614RtqrMNyJw=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-23.4.tar.bz2"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-23.4.tar.bz2"
-      }
-    },
-    "emacs-24-1": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-UVWKuXneNHq1zJtkGo6eLacUl5MdEbCBL68a8NcYEWk=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.1.tar.bz2"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.1.tar.bz2"
-      }
-    },
-    "emacs-24-2": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-zdhQvRQs1ty4b8E4Khf10dCv+iGNuVl4FDCtUFqt2bI=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.2.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.2.tar.xz"
-      }
-    },
-    "emacs-24-3": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-kANCrStnnt/0Mxt5qV94iKwcXGgFqqhJVUwRSAC0ez4=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.3.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.3.tar.xz"
-      }
-    },
-    "emacs-24-4": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-WDPY5n3pMF7o4noS941GLDQ2zFKa8PvDkWjeMw0Wsm0=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.4.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.4.tar.xz"
-      }
-    },
-    "emacs-24-5": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-jb801XX+fMvQ5OBYKpjPPsqAcqgaeYKPRfeZIP8R/rc=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.5.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-24.5.tar.xz"
-      }
-    },
-    "emacs-25-1": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-Lxgh6MOMYYaenkgwFiFw4SZOxkGk+q/4bDv3B8rAAWM=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-25.1.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-25.1.tar.xz"
-      }
-    },
-    "emacs-25-2": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-L+Tgth/sI7aI+xQOu5iRWxhaivsK6BcmNB7wV1bUzg0=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-25.2.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-25.2.tar.xz"
-      }
-    },
-    "emacs-25-3": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-1czqSKUzuoJc+WBwpojicwpZE6VKnAqNJt2V04k2ifc=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-25.3.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-25.3.tar.xz"
-      }
-    },
-    "emacs-26-1": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-amsPbiVbko/Qvsw2cfJdkhq0UHGjhn5uyLN0MEeMq20=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-26.1.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-26.1.tar.xz"
-      }
-    },
-    "emacs-26-2": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-AvO73gk6Tb+aDARgbgAq6RVz71wBSxh12RrnrD/3TM0=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-26.2.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-26.2.tar.xz"
-      }
-    },
-    "emacs-26-3": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-iYPYrf/6Cd6wozabn2D/bj9M591vLqO84uPyj3ZN/+I=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-26.3.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-26.3.tar.xz"
-      }
-    },
-    "emacs-27-1": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-oADGvqBASpU8Q512c+PPF1pwm1/tg2oo2a30ghJ2xVQ=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-27.1.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-27.1.tar.xz"
-      }
-    },
-    "emacs-27-2": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-BaLVKUHuxGuO3F+/YRQ8DCe8FkR/fkoJIh6p4xbF4m0=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-27.2.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-27.2.tar.xz"
-      }
-    },
-    "emacs-28-1": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-EGuOesE+gq6wzF4qiqdBQhPm+TGzZnJ/sHxkd4Liz4s=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-28.1.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-28.1.tar.xz"
-      }
-    },
-    "emacs-28-2": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-+Tmn3gJ+7536KehS3QUGRWFc0ic7xZI/KDl63n/yEp4=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-28.2.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-28.2.tar.xz"
-      }
-    },
-    "emacs-29-1": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-C7920QvXQvrqUNAScIb++H1+3CC54ppPby+/hh6+yo0=",
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-29.1.tar.xz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://ftp.gnu.org/gnu/emacs/emacs-29.1.tar.xz"
-      }
-    },
-    "emacs-ci": {
-      "inputs": {
-        "emacs-23-4": "emacs-23-4",
-        "emacs-24-1": "emacs-24-1",
-        "emacs-24-2": "emacs-24-2",
-        "emacs-24-3": "emacs-24-3",
-        "emacs-24-4": "emacs-24-4",
-        "emacs-24-5": "emacs-24-5",
-        "emacs-25-1": "emacs-25-1",
-        "emacs-25-2": "emacs-25-2",
-        "emacs-25-3": "emacs-25-3",
-        "emacs-26-1": "emacs-26-1",
-        "emacs-26-2": "emacs-26-2",
-        "emacs-26-3": "emacs-26-3",
-        "emacs-27-1": "emacs-27-1",
-        "emacs-27-2": "emacs-27-2",
-        "emacs-28-1": "emacs-28-1",
-        "emacs-28-2": "emacs-28-2",
-        "emacs-29-1": "emacs-29-1",
-        "emacs-release-snapshot": "emacs-release-snapshot",
-        "emacs-snapshot": "emacs-snapshot",
-        "flake-compat": "flake-compat",
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
-      },
-      "locked": {
-        "lastModified": 1702913865,
-        "narHash": "sha256-B8yBp22GNjyeTBfzKMalzf1GTqoZCE1/RLWoBe95RNo=",
-        "owner": "purcell",
-        "repo": "nix-emacs-ci",
-        "rev": "d78de6883eb7c54e24018b1a030a2ba40e116efa",
-        "type": "github"
-      },
-      "original": {
-        "owner": "purcell",
-        "repo": "nix-emacs-ci",
-        "type": "github"
-      }
-    },
-    "emacs-release-snapshot": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1702796831,
-        "narHash": "sha256-2rX+QbMUdDC7DWOK5CVhqcUh1PfyesAvUgoSZ9jH6MI=",
-        "owner": "emacs-mirror",
-        "repo": "emacs",
-        "rev": "b6429b1c1c781655efc761e237a7ae0aa6a0d344",
-        "type": "github"
-      },
-      "original": {
-        "owner": "emacs-mirror",
-        "ref": "emacs-29",
-        "repo": "emacs",
-        "type": "github"
-      }
-    },
-    "emacs-snapshot": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1702877669,
-        "narHash": "sha256-l2+MKgYxum2V7equFc76lTFjCi3rSFKyFt7oye4ka/k=",
-        "owner": "emacs-mirror",
-        "repo": "emacs",
-        "rev": "14504fca8b5589c5c80a69dcab6e02681b196fa1",
-        "type": "github"
-      },
-      "original": {
-        "owner": "emacs-mirror",
-        "repo": "emacs",
-        "type": "github"
-      }
-    },
-    "flake-compat": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1673956053,
-        "narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1687709756,
-        "narHash": "sha256-Y5wKlQSkgEK2weWdOu4J3riRd+kV/VCgHsqLNTTWQ/0=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "dbabf0ca0c0c4bce6ea5eaf65af5cb694d2082c7",
-        "type": "github"
-      },
-      "original": {
-        "id": "flake-utils",
-        "type": "indirect"
-      }
-    },
-    "flake-utils_2": {
-      "inputs": {
-        "systems": "systems_2"
-      },
-      "locked": {
-        "lastModified": 1701680307,
-        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
-        "type": "github"
-      },
-      "original": {
-        "id": "flake-utils",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1698553279,
-        "narHash": "sha256-T/9P8yBSLcqo/v+FTOBK+0rjzjPMctVymZydbvR/Fak=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "90e85bc7c1a6fc0760a94ace129d3a1c61c3d035",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixpkgs-unstable",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1704008649,
-        "narHash": "sha256-rGPSWjXTXTurQN9beuHdyJhB8O761w1Zc5BqSSmHvoM=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "d44d59d2b5bd694cd9d996fd8c51d03e3e9ba7f7",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
-      }
-    },
-    "root": {
-      "inputs": {
-        "emacs-ci": "emacs-ci",
-        "flake-utils": "flake-utils_2",
-        "nixpkgs": "nixpkgs_2"
-      }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}
diff --git a/flake.nix b/flake.nix
deleted file mode 100644
index 5d856db..0000000
--- a/flake.nix
+++ /dev/null
@@ -1,46 +0,0 @@
-{
-  nixConfig = {
-    extra-substituters = [
-      "https://emacs-ci.cachix.org"
-    ];
-    extra-trusted-public-keys = [
-      "emacs-ci.cachix.org-1:B5FVOrxhXXrOL0S+tQ7USrhjMT5iOPH+QN9q0NItom4="
-    ];
-  };
-
-  inputs.emacs-ci.url = "github:purcell/nix-emacs-ci";
-
-  outputs = {
-    nixpkgs,
-    emacs-ci,
-    flake-utils,
-    ...
-  }: let
-  in
-    flake-utils.lib.eachDefaultSystem
-    (system: let
-      pkgs = nixpkgs.legacyPackages.${system};
-
-      emacsCIWith = emacs:
-        (pkgs.emacs.pkgs.overrideScope'
-          (_: _: {
-            inherit emacs;
-          }))
-        .withPackages (epkgs: [
-          (epkgs.treesit-grammars.with-grammars (grammars: [grammars.tree-sitter-php]))
-        ]);
-
-      makeEmacsShell = emacs:
-        pkgs.mkShell {
-          buildInputs = [
-            (emacsCIWith emacs)
-          ];
-        };
-    in {
-      devShells.emacs-snapshot =
-        makeEmacsShell emacs-ci.packages.${system}.emacs-snapshot;
-      devShells.emacs-release-snapshot =
-        makeEmacsShell emacs-ci.packages.${system}.emacs-release-snapshot;
-      devShells.emacs-29-1 = makeEmacsShell emacs-ci.packages.${system}.emacs-29-1;
-    });
-}