diff --git a/flake.lock b/flake.lock
index 427561469..02f2d47d3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -25,22 +25,22 @@
         "rev": "40393c938111ac78232dc2c7eec5edb4a22d03e8",
         "revCount": 62,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/HaskellNet-SSL.git"
+        "url": "https://gitlab.uniworx.de/haskell/HaskellNet-SSL.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/HaskellNet-SSL.git"
+        "url": "https://gitlab.uniworx.de/haskell/HaskellNet-SSL.git"
       }
     },
     "cabal-32": {
       "flake": false,
       "locked": {
         "lastModified": 1603716527,
-        "narHash": "sha256-sDbrmur9Zfp4mPKohCD8IDZfXJ0Tjxpmr2R+kg5PpSY=",
+        "narHash": "sha256-X0TFfdD4KZpwl0Zr6x+PLxUt/VyKQfX7ylXHdmZIL+w=",
         "owner": "haskell",
         "repo": "cabal",
-        "rev": "94aaa8e4720081f9c75497e2735b90f6a819b08e",
+        "rev": "48bf10787e27364730dd37a42b603cee8d6af7ee",
         "type": "github"
       },
       "original": {
@@ -53,11 +53,11 @@
     "cabal-34": {
       "flake": false,
       "locked": {
-        "lastModified": 1622475795,
-        "narHash": "sha256-chwTL304Cav+7p38d9mcb+egABWmxo2Aq+xgVBgEb/U=",
+        "lastModified": 1645834128,
+        "narHash": "sha256-wG3d+dOt14z8+ydz4SL7pwGfe7SiimxcD/LOuPCV6xM=",
         "owner": "haskell",
         "repo": "cabal",
-        "rev": "b086c1995cdd616fc8d91f46a21e905cc50a1049",
+        "rev": "5ff598c67f53f7c4f48e31d722ba37172230c462",
         "type": "github"
       },
       "original": {
@@ -67,6 +67,23 @@
         "type": "github"
       }
     },
+    "cabal-36": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1669081697,
+        "narHash": "sha256-I5or+V7LZvMxfbYgZATU4awzkicBwwok4mVoje+sGmU=",
+        "owner": "haskell",
+        "repo": "cabal",
+        "rev": "8fd619e33d34924a94e691c5fea2c42f0fc7f144",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "3.6",
+        "repo": "cabal",
+        "type": "github"
+      }
+    },
     "cardano-shell": {
       "flake": false,
       "locked": {
@@ -92,12 +109,12 @@
         "rev": "f8170266ab25b533576e96715bedffc5aa4f19fa",
         "revCount": 153,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/colonnade.git"
+        "url": "https://gitlab.uniworx.de/haskell/colonnade.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/colonnade.git"
+        "url": "https://gitlab.uniworx.de/haskell/colonnade.git"
       }
     },
     "conduit-resumablesink": {
@@ -109,12 +126,12 @@
         "rev": "cbea6159c2975d42f948525e03e12fc390da53c5",
         "revCount": 10,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/conduit-resumablesink.git"
+        "url": "https://gitlab.uniworx.de/haskell/conduit-resumablesink.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/conduit-resumablesink.git"
+        "url": "https://gitlab.uniworx.de/haskell/conduit-resumablesink.git"
       }
     },
     "cryptoids": {
@@ -126,12 +143,12 @@
         "rev": "130b0dcbf2b09ccdf387b50262f1efbbbf1819e3",
         "revCount": 44,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptoids.git"
+        "url": "https://gitlab.uniworx.de/haskell/cryptoids.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptoids.git"
+        "url": "https://gitlab.uniworx.de/haskell/cryptoids.git"
       }
     },
     "cryptonite": {
@@ -143,12 +160,12 @@
         "rev": "71a630edaf5f22c464e24fac8d9d310f4055ea1f",
         "revCount": 1202,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptonite.git"
+        "url": "https://gitlab.uniworx.de/haskell/cryptonite.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptonite.git"
+        "url": "https://gitlab.uniworx.de/haskell/cryptonite.git"
       }
     },
     "encoding": {
@@ -160,12 +177,12 @@
         "rev": "22fc3bb14841d8d50997aa47f1be3852e666f787",
         "revCount": 162,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/encoding.git"
+        "url": "https://gitlab.uniworx.de/haskell/encoding.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/encoding.git"
+        "url": "https://gitlab.uniworx.de/haskell/encoding.git"
       }
     },
     "esqueleto": {
@@ -177,12 +194,29 @@
         "rev": "e18dd125c5ea26fa4e88bed079b61d8c1365ee37",
         "revCount": 708,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/esqueleto.git"
+        "url": "https://gitlab.uniworx.de/haskell/esqueleto.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/esqueleto.git"
+        "url": "https://gitlab.uniworx.de/haskell/esqueleto.git"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1672831974,
+        "narHash": "sha256-z9k3MfslLjWQfnjBtEtJZdq3H7kyi2kQtUThfTgdRk0=",
+        "owner": "input-output-hk",
+        "repo": "flake-compat",
+        "rev": "45f2638735f8cdc40fe302742b79f248d23eb368",
+        "type": "github"
+      },
+      "original": {
+        "owner": "input-output-hk",
+        "ref": "hkm/gitlab-fix",
+        "repo": "flake-compat",
+        "type": "github"
       }
     },
     "flake-utils": {
@@ -190,11 +224,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1701680307,
+        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
         "type": "github"
       },
       "original": {
@@ -204,21 +238,6 @@
         "type": "github"
       }
     },
-    "flake-utils_2": {
-      "locked": {
-        "lastModified": 1623875721,
-        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "ghc-8.6.5-iohk": {
       "flake": false,
       "locked": {
@@ -236,14 +255,51 @@
         "type": "github"
       }
     },
+    "ghc98X": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696643148,
+        "narHash": "sha256-E02DfgISH7EvvNAu0BHiPvl1E5FGMDi0pWdNZtIBC9I=",
+        "ref": "ghc-9.8",
+        "rev": "443e870d977b1ab6fc05f47a9a17bc49296adbd6",
+        "revCount": 61642,
+        "submodules": true,
+        "type": "git",
+        "url": "https://gitlab.haskell.org/ghc/ghc"
+      },
+      "original": {
+        "ref": "ghc-9.8",
+        "submodules": true,
+        "type": "git",
+        "url": "https://gitlab.haskell.org/ghc/ghc"
+      }
+    },
+    "ghc99": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1701580282,
+        "narHash": "sha256-drA01r3JrXnkKyzI+owMZGxX0JameMzjK0W5jJE/+V4=",
+        "ref": "refs/heads/master",
+        "rev": "f5eb0f2982e9cf27515e892c4bdf634bcfb28459",
+        "revCount": 62197,
+        "submodules": true,
+        "type": "git",
+        "url": "https://gitlab.haskell.org/ghc/ghc"
+      },
+      "original": {
+        "submodules": true,
+        "type": "git",
+        "url": "https://gitlab.haskell.org/ghc/ghc"
+      }
+    },
     "hackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1629940355,
-        "narHash": "sha256-o9/U8R/JtyHIcxhMLaWYP+D/52B6LH/ikCyNZ7+mymI=",
+        "lastModified": 1704587119,
+        "narHash": "sha256-TRFglZ7pCUUA/8nOuBSgl00/ZRCHEyjlChM7BKtOW7o=",
         "owner": "input-output-hk",
         "repo": "hackage.nix",
-        "rev": "429deb2a137084c011310bad92f4cecf244f2fc2",
+        "rev": "ecd98fbd5469a20b4676d12a16cf0ddfb985839b",
         "type": "github"
       },
       "original": {
@@ -257,26 +313,42 @@
         "HTTP": "HTTP",
         "cabal-32": "cabal-32",
         "cabal-34": "cabal-34",
+        "cabal-36": "cabal-36",
         "cardano-shell": "cardano-shell",
-        "flake-utils": "flake-utils_2",
+        "flake-compat": "flake-compat",
         "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
+        "ghc98X": "ghc98X",
+        "ghc99": "ghc99",
         "hackage": "hackage",
+        "hls-1.10": "hls-1.10",
+        "hls-2.0": "hls-2.0",
+        "hls-2.2": "hls-2.2",
+        "hls-2.3": "hls-2.3",
+        "hls-2.4": "hls-2.4",
         "hpc-coveralls": "hpc-coveralls",
-        "nix-tools": "nix-tools",
-        "nixpkgs": "nixpkgs",
+        "hydra": "hydra",
+        "iserv-proxy": "iserv-proxy",
+        "nixpkgs": [
+          "haskell-nix",
+          "nixpkgs-unstable"
+        ],
         "nixpkgs-2003": "nixpkgs-2003",
-        "nixpkgs-2009": "nixpkgs-2009",
         "nixpkgs-2105": "nixpkgs-2105",
+        "nixpkgs-2111": "nixpkgs-2111",
+        "nixpkgs-2205": "nixpkgs-2205",
+        "nixpkgs-2211": "nixpkgs-2211",
+        "nixpkgs-2305": "nixpkgs-2305",
+        "nixpkgs-2311": "nixpkgs-2311",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "old-ghc-nix": "old-ghc-nix",
         "stackage": "stackage"
       },
       "locked": {
-        "lastModified": 1629940530,
-        "narHash": "sha256-cf/bshYWloj+rJSmOcFokN6Rs1lpFkiECKpykN3JBH8=",
+        "lastModified": 1704588627,
+        "narHash": "sha256-r2PBVhwymJcsILZ7bjPu5s7gZei4TWB3oQ18j/XEU3Q=",
         "owner": "input-output-hk",
         "repo": "haskell.nix",
-        "rev": "5fcd4faf98fc8ca8287e2c7bc1fff71dfd340f1f",
+        "rev": "a7c10d298ecb807ec403f717cb4b095af01f8137",
         "type": "github"
       },
       "original": {
@@ -285,6 +357,91 @@
         "type": "github"
       }
     },
+    "hls-1.10": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1680000865,
+        "narHash": "sha256-rc7iiUAcrHxwRM/s0ErEsSPxOR3u8t7DvFeWlMycWgo=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "b08691db779f7a35ff322b71e72a12f6e3376fd9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "1.10.0.0",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
+    "hls-2.0": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1687698105,
+        "narHash": "sha256-OHXlgRzs/kuJH8q7Sxh507H+0Rb8b7VOiPAjcY9sM1k=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "783905f211ac63edf982dd1889c671653327e441",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "2.0.0.1",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
+    "hls-2.2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1693064058,
+        "narHash": "sha256-8DGIyz5GjuCFmohY6Fa79hHA/p1iIqubfJUTGQElbNk=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "b30f4b6cf5822f3112c35d14a0cba51f3fe23b85",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "2.2.0.0",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
+    "hls-2.3": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1695910642,
+        "narHash": "sha256-tR58doOs3DncFehHwCLczJgntyG/zlsSd7DgDgMPOkI=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "458ccdb55c9ea22cd5d13ec3051aaefb295321be",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "2.3.0.0",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
+    "hls-2.4": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1699862708,
+        "narHash": "sha256-YHXSkdz53zd0fYGIYOgLt6HrA0eaRJi9mXVqDgmvrjk=",
+        "owner": "haskell",
+        "repo": "haskell-language-server",
+        "rev": "54507ef7e85fa8e9d0eb9a669832a3287ffccd57",
+        "type": "github"
+      },
+      "original": {
+        "owner": "haskell",
+        "ref": "2.4.0.1",
+        "repo": "haskell-language-server",
+        "type": "github"
+      }
+    },
     "hpc-coveralls": {
       "flake": false,
       "locked": {
@@ -301,6 +458,46 @@
         "type": "github"
       }
     },
+    "hydra": {
+      "inputs": {
+        "nix": "nix",
+        "nixpkgs": [
+          "haskell-nix",
+          "hydra",
+          "nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1671755331,
+        "narHash": "sha256-hXsgJj0Cy0ZiCiYdW2OdBz5WmFyOMKuw4zyxKpgUKm4=",
+        "owner": "NixOS",
+        "repo": "hydra",
+        "rev": "f48f00ee6d5727ae3e488cbf9ce157460853fea8",
+        "type": "github"
+      },
+      "original": {
+        "id": "hydra",
+        "type": "indirect"
+      }
+    },
+    "iserv-proxy": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1691634696,
+        "narHash": "sha256-MZH2NznKC/gbgBu8NgIibtSUZeJ00HTLJ0PlWKCBHb0=",
+        "ref": "hkm/remote-iserv",
+        "rev": "43a979272d9addc29fbffc2e8542c5d96e993d73",
+        "revCount": 14,
+        "type": "git",
+        "url": "https://gitlab.haskell.org/hamishmack/iserv-proxy.git"
+      },
+      "original": {
+        "ref": "hkm/remote-iserv",
+        "type": "git",
+        "url": "https://gitlab.haskell.org/hamishmack/iserv-proxy.git"
+      }
+    },
     "ldap-client": {
       "flake": false,
       "locked": {
@@ -310,12 +507,28 @@
         "rev": "01afaf599ba6f8a9d804c269e91d3190b249d3f0",
         "revCount": 61,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/ldap-client.git"
+        "url": "https://gitlab.uniworx.de/haskell/ldap-client.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/ldap-client.git"
+        "url": "https://gitlab.uniworx.de/haskell/ldap-client.git"
+      }
+    },
+    "lowdown-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1633514407,
+        "narHash": "sha256-Dw32tiMjdK9t3ETl5fzGrutQTzh2rufgZV4A/BbxuD4=",
+        "owner": "kristapsdz",
+        "repo": "lowdown",
+        "rev": "d2c2b44ff6c27b936ec27358a2653caaef8f73b8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "kristapsdz",
+        "repo": "lowdown",
+        "type": "github"
       }
     },
     "memcached-binary": {
@@ -327,12 +540,12 @@
         "rev": "b7071df50bad3a251a544b984e4bf98fa09b8fae",
         "revCount": 28,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/memcached-binary.git"
+        "url": "https://gitlab.uniworx.de/haskell/memcached-binary.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/memcached-binary.git"
+        "url": "https://gitlab.uniworx.de/haskell/memcached-binary.git"
       }
     },
     "minio-hs": {
@@ -344,42 +557,47 @@
         "rev": "42103ab247057c04c8ce7a83d9d4c160713a3df1",
         "revCount": 197,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/minio-hs.git"
+        "url": "https://gitlab.uniworx.de/haskell/minio-hs.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/minio-hs.git"
+        "url": "https://gitlab.uniworx.de/haskell/minio-hs.git"
       }
     },
-    "nix-tools": {
-      "flake": false,
+    "nix": {
+      "inputs": {
+        "lowdown-src": "lowdown-src",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-regression": "nixpkgs-regression"
+      },
       "locked": {
-        "lastModified": 1626997434,
-        "narHash": "sha256-1judQmP298ao6cGUNxcGhcAXHOnA9qSLvWk/ZtoUL7w=",
-        "owner": "input-output-hk",
-        "repo": "nix-tools",
-        "rev": "c8c5e6a6fbb12a73598d1a434984a36e880ce3cf",
+        "lastModified": 1661606874,
+        "narHash": "sha256-9+rpYzI+SmxJn+EbYxjGv68Ucp22bdFUSy/4LkHkkDQ=",
+        "owner": "NixOS",
+        "repo": "nix",
+        "rev": "11e45768b34fdafdcf019ddbd337afa16127ff0f",
         "type": "github"
       },
       "original": {
-        "owner": "input-output-hk",
-        "repo": "nix-tools",
+        "owner": "NixOS",
+        "ref": "2.11.0",
+        "repo": "nix",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1624291665,
-        "narHash": "sha256-kNkaoa3dai9WOi7fsPklCCWZ8hRAkXx0ZUhpYKShyUk=",
+        "lastModified": 1657693803,
+        "narHash": "sha256-G++2CJ9u0E7NNTAi9n5G8TdDmGJXcIjkJ3NF8cetQB8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3c6f3f84af60a8ed5b8a79cf3026b7630fcdefb8",
+        "rev": "365e1b3a859281cf11b94f87231adeabbdd878a2",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-20.09-darwin",
+        "ref": "nixos-22.05-small",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -400,29 +618,13 @@
         "type": "github"
       }
     },
-    "nixpkgs-2009": {
-      "locked": {
-        "lastModified": 1624271064,
-        "narHash": "sha256-qns/uRW7MR2EfVf6VEeLgCsCp7pIOjDeR44JzTF09MA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "46d1c3f28ca991601a53e9a14fdd53fcd3dd8416",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-20.09-darwin",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs-2105": {
       "locked": {
-        "lastModified": 1624291665,
-        "narHash": "sha256-kNkaoa3dai9WOi7fsPklCCWZ8hRAkXx0ZUhpYKShyUk=",
+        "lastModified": 1659914493,
+        "narHash": "sha256-lkA5X3VNMKirvA+SUzvEhfA7XquWLci+CGi505YFAIs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3c6f3f84af60a8ed5b8a79cf3026b7630fcdefb8",
+        "rev": "022caabb5f2265ad4006c1fa5b1ebe69fb0c3faf",
         "type": "github"
       },
       "original": {
@@ -432,7 +634,119 @@
         "type": "github"
       }
     },
-    "nixpkgs-recent": {
+    "nixpkgs-2111": {
+      "locked": {
+        "lastModified": 1659446231,
+        "narHash": "sha256-hekabNdTdgR/iLsgce5TGWmfIDZ86qjPhxDg/8TlzhE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "eabc38219184cc3e04a974fe31857d8e0eac098d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-21.11-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2205": {
+      "locked": {
+        "lastModified": 1685573264,
+        "narHash": "sha256-Zffu01pONhs/pqH07cjlF10NnMDLok8ix5Uk4rhOnZQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "380be19fbd2d9079f677978361792cb25e8a3635",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-22.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2211": {
+      "locked": {
+        "lastModified": 1688392541,
+        "narHash": "sha256-lHrKvEkCPTUO+7tPfjIcb7Trk6k31rz18vkyqmkeJfY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "ea4c80b39be4c09702b0cb3b42eab59e2ba4f24b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-22.11-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2305": {
+      "locked": {
+        "lastModified": 1701362232,
+        "narHash": "sha256-GVdzxL0lhEadqs3hfRLuj+L1OJFGiL/L7gCcelgBlsw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d2332963662edffacfddfad59ff4f709dde80ffe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-23.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-2311": {
+      "locked": {
+        "lastModified": 1701386440,
+        "narHash": "sha256-xI0uQ9E7JbmEy/v8kR9ZQan6389rHug+zOtZeZFiDJk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "293822e55ec1872f715a66d0eda9e592dc14419f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-23.11-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-regression": {
+      "locked": {
+        "lastModified": 1643052045,
+        "narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1694822471,
+        "narHash": "sha256-6fSDCj++lZVMZlyqOe9SIOL8tYSBz1bI8acwovRwoX8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "47585496bcb13fb72e4a90daeea2f434e2501998",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "47585496bcb13fb72e4a90daeea2f434e2501998",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1669833724,
         "narHash": "sha256-/HEZNyGbnQecrgJnfE8d0WC5c1xuPSD2LUpB6YXlg4c=",
@@ -448,51 +762,19 @@
         "type": "github"
       }
     },
-    "nixpkgs-unstable": {
-      "locked": {
-        "lastModified": 1628785280,
-        "narHash": "sha256-2B5eMrEr6O8ff2aQNeVxTB+9WrGE80OB4+oM6T7fOcc=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "6525bbc06a39f26750ad8ee0d40000ddfdc24acb",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1622516815,
-        "narHash": "sha256-ZjBd81a6J3TwtlBr3rHsZspYUwT9OdhDk+a/SgSEf7I=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "7e9b0dff974c89e070da1ad85713ff3c20b0ca97",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "21.05",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "old-ghc-nix": {
       "flake": false,
       "locked": {
-        "lastModified": 1621819714,
-        "narHash": "sha256-EJCnYQSWk7FRLwS0lZgTWIiQ6pcvDX1VuD6LGD4Uwzs=",
+        "lastModified": 1631092763,
+        "narHash": "sha256-sIKgO+z7tj4lw3u6oBZxqIhDrzSkvpHtv0Kki+lh9Fg=",
         "owner": "angerman",
         "repo": "old-ghc-nix",
-        "rev": "f089a6f090cdb35fcf95f865fc6a31ba6b3ac4eb",
+        "rev": "af48a7a7353e418119b6dfe3cd1463a657f342b8",
         "type": "github"
       },
       "original": {
         "owner": "angerman",
-        "ref": "master2",
+        "ref": "master",
         "repo": "old-ghc-nix",
         "type": "github"
       }
@@ -512,7 +794,6 @@
         "memcached-binary": "memcached-binary",
         "minio-hs": "minio-hs",
         "nixpkgs": "nixpkgs_2",
-        "nixpkgs-recent": "nixpkgs-recent",
         "serversession": "serversession",
         "xss-sanitize": "xss-sanitize",
         "yesod": "yesod",
@@ -528,22 +809,22 @@
         "rev": "b9d76def10da1260c7f6aa82bda32111f37a952b",
         "revCount": 174,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/serversession.git"
+        "url": "https://gitlab.uniworx.de/haskell/serversession.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/serversession.git"
+        "url": "https://gitlab.uniworx.de/haskell/serversession.git"
       }
     },
     "stackage": {
       "flake": false,
       "locked": {
-        "lastModified": 1629940472,
-        "narHash": "sha256-LFrNC25OpNoS6dGG5om+UGP8YdYjp01Qm6cenbemaVg=",
+        "lastModified": 1704586233,
+        "narHash": "sha256-fPoR/v1FWkc8KwXkTHp0uCV4sKy4WWgzLGnvEviOl7Y=",
         "owner": "input-output-hk",
         "repo": "stackage.nix",
-        "rev": "c50dd0527babf85818cc67a7099e532e453752db",
+        "rev": "5858fedb06d93d88a20c68ca882b6dcb9e72a65d",
         "type": "github"
       },
       "original": {
@@ -576,12 +857,12 @@
         "rev": "dc928c3a456074b8777603bea20e81937321777f",
         "revCount": 114,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/xss-sanitize.git"
+        "url": "https://gitlab.uniworx.de/haskell/xss-sanitize.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/xss-sanitize.git"
+        "url": "https://gitlab.uniworx.de/haskell/xss-sanitize.git"
       }
     },
     "yesod": {
@@ -593,12 +874,12 @@
         "rev": "a59f63e0336ee61f7a90b8778e9147305d3127bb",
         "revCount": 5053,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/yesod.git"
+        "url": "https://gitlab.uniworx.de/haskell/yesod.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/yesod.git"
+        "url": "https://gitlab.uniworx.de/haskell/yesod.git"
       }
     },
     "zip-stream": {
@@ -610,12 +891,12 @@
         "rev": "843683d024f767de236f74d24a3348f69181a720",
         "revCount": 39,
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/zip-stream.git"
+        "url": "https://gitlab.uniworx.de/haskell/zip-stream.git"
       },
       "original": {
         "ref": "uni2work",
         "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/zip-stream.git"
+        "url": "https://gitlab.uniworx.de/haskell/zip-stream.git"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 70f4146ef..e0f481cab 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,14 +12,7 @@
       type = "github";
       owner = "NixOS";
       repo = "nixpkgs";
-      # ref = "6525bbc06a39f26750ad8ee0d40000ddfdc24acb";
-      ref = "21.05";
-    };
-    nixpkgs-recent = {
-      type = "github";
-      owner = "NixOS";
-      repo = "nixpkgs";
-      ref = "22.11";
+      ref = "22.11"; # TODO deprecated, update ref
     };
     flake-utils = {
       type = "github";
@@ -86,7 +79,7 @@
     };
   };
 
-  outputs = inputs@{ self, nixpkgs, nixpkgs-recent, flake-utils, haskell-nix, ... }: flake-utils.lib.eachSystem ["x86_64-linux"]
+  outputs = inputs@{ self, nixpkgs, flake-utils, haskell-nix, ... }: flake-utils.lib.eachSystem ["x86_64-linux"]
     (system:
       let frontendSource = pkgs.lib.sourceByRegex ./. [
             "^(assets|frontend)(/.*)?$"
@@ -112,17 +105,17 @@
 
           overlays = [
             (final: prev: let
-                pkgs-recent = import nixpkgs-recent { inherit system; };
+                pkgs = import nixpkgs { inherit system; };
                in {
-                 inherit (pkgs-recent) dockerTools node2nix glibcLocalesUtf8 tzdata chromium minio minio-client skopeo; inherit (pkgs-recent.stdenv) fetchurlBoot;
+                 inherit (pkgs) dockerTools node2nix glibcLocalesUtf8 tzdata chromium minio minio-client skopeo; inherit (pkgs.stdenv) fetchurlBoot;
                  stack = pkgs.symlinkJoin {
-                  inherit (pkgs-recent.stack) name;
-                  paths = [pkgs-recent.stack];
-                  nativeBuildInputs = [pkgs-recent.makeWrapper];
+                  inherit (pkgs.stack) name;
+                  paths = [pkgs.stack];
+                  nativeBuildInputs = [pkgs.makeWrapper];
 
                   postBuild = ''
                     wrapProgram $out/bin/stack \
-                      --prefix PATH : "${prev.lib.makeBinPath [pkgs-recent.nix]}" \
+                      --prefix PATH : "${prev.lib.makeBinPath [pkgs.nix]}" \
                       --add-flags "\
                         --nix \
                         --no-nix-pure \