diff --git a/flake.lock b/flake.lock
index dedb5ba85..f5c74561b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,206 +1,5 @@
 {
   "nodes": {
-    "HTTP": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1451647621,
-        "narHash": "sha256-oHIyw3x0iKBexEo49YeUDV1k74ZtyYKGR2gNJXXRxts=",
-        "owner": "phadej",
-        "repo": "HTTP",
-        "rev": "9bc0996d412fef1787449d841277ef663ad9a915",
-        "type": "github"
-      },
-      "original": {
-        "owner": "phadej",
-        "repo": "HTTP",
-        "type": "github"
-      }
-    },
-    "HaskellNet-SSL": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1582382981,
-        "narHash": "sha256-fjw+bKaGrGw9uTUd6fWZCIz24uuSTA1VIeijZ+zSq/M=",
-        "ref": "uni2work",
-        "rev": "40393c938111ac78232dc2c7eec5edb4a22d03e8",
-        "revCount": 62,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/HaskellNet-SSL.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/HaskellNet-SSL.git"
-      }
-    },
-    "cabal-32": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1603716527,
-        "narHash": "sha256-sDbrmur9Zfp4mPKohCD8IDZfXJ0Tjxpmr2R+kg5PpSY=",
-        "owner": "haskell",
-        "repo": "cabal",
-        "rev": "94aaa8e4720081f9c75497e2735b90f6a819b08e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "3.2",
-        "repo": "cabal",
-        "type": "github"
-      }
-    },
-    "cabal-34": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1622475795,
-        "narHash": "sha256-chwTL304Cav+7p38d9mcb+egABWmxo2Aq+xgVBgEb/U=",
-        "owner": "haskell",
-        "repo": "cabal",
-        "rev": "b086c1995cdd616fc8d91f46a21e905cc50a1049",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskell",
-        "ref": "3.4",
-        "repo": "cabal",
-        "type": "github"
-      }
-    },
-    "cardano-shell": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1608537748,
-        "narHash": "sha256-PulY1GfiMgKVnBci3ex4ptk2UNYMXqGjJOxcPy2KYT4=",
-        "owner": "input-output-hk",
-        "repo": "cardano-shell",
-        "rev": "9392c75087cb9a3d453998f4230930dea3a95725",
-        "type": "github"
-      },
-      "original": {
-        "owner": "input-output-hk",
-        "repo": "cardano-shell",
-        "type": "github"
-      }
-    },
-    "colonnade": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1592144408,
-        "narHash": "sha256-bQSOjbn56ZEjzqkC/oqZ331FdxF7tbhJndtXeRqWcq8=",
-        "ref": "uni2work",
-        "rev": "f8170266ab25b533576e96715bedffc5aa4f19fa",
-        "revCount": 153,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/colonnade.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/colonnade.git"
-      }
-    },
-    "conduit-resumablesink": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1533667275,
-        "narHash": "sha256-+TR0tYRk1WFQRrFs6oO80jdlfY7OTyB7th7Hi/tDQMw=",
-        "ref": "uni2work",
-        "rev": "cbea6159c2975d42f948525e03e12fc390da53c5",
-        "revCount": 10,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/conduit-resumablesink.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/conduit-resumablesink.git"
-      }
-    },
-    "cryptoids": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1602592869,
-        "narHash": "sha256-uhbIaVFXtdWmeDJl0ZDyJnE2Ul3bV324KkaK+ix6USA=",
-        "ref": "uni2work",
-        "rev": "130b0dcbf2b09ccdf387b50262f1efbbbf1819e3",
-        "revCount": 44,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptoids.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptoids.git"
-      }
-    },
-    "cryptonite": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1624444174,
-        "narHash": "sha256-sDMA4ej1NIModAt7PQvcgIknI3KwfzcAp9YQUSe4CWw=",
-        "ref": "uni2work",
-        "rev": "71a630edaf5f22c464e24fac8d9d310f4055ea1f",
-        "revCount": 1202,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptonite.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/cryptonite.git"
-      }
-    },
-    "docker-nixpkgs": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1631525111,
-        "narHash": "sha256-dJKw280B1Hp0f6tSkBtkY0nrMT0DR/bmerrS3cQdBjI=",
-        "owner": "nix-community",
-        "repo": "docker-nixpkgs",
-        "rev": "df7f64139a0b2384fb2448dc2a406815f8d03867",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "docker-nixpkgs",
-        "type": "github"
-      }
-    },
-    "encoding": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1582400874,
-        "narHash": "sha256-ukQw4tvjtvqR8HEPgPTSmvtTc6WeXEs3IfCLLNy+YJc=",
-        "ref": "uni2work",
-        "rev": "22fc3bb14841d8d50997aa47f1be3852e666f787",
-        "revCount": 162,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/encoding.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/encoding.git"
-      }
-    },
-    "esqueleto": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1648739688,
-        "narHash": "sha256-rtKhMti9GNq0i7ngTLuNXIyr3zSUTh3G8anXPrKirTk=",
-        "ref": "uni2work",
-        "rev": "e18dd125c5ea26fa4e88bed079b61d8c1365ee37",
-        "revCount": 708,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/esqueleto.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/esqueleto.git"
-      }
-    },
     "flake-utils": {
       "locked": {
         "lastModified": 1623875721,
@@ -212,379 +11,31 @@
       },
       "original": {
         "owner": "numtide",
+        "ref": "master",
         "repo": "flake-utils",
         "type": "github"
       }
     },
-    "fontawesome-token": {
-      "flake": false,
-      "locked": {
-        "narHash": "sha256-XABvCxD/7zXRyyR01dr5IvK+8A0VoibiVUS5ZAU+f+o=",
-        "path": "/etc/fontawesome-token",
-        "type": "path"
-      },
-      "original": {
-        "path": "/etc/fontawesome-token",
-        "type": "path"
-      }
-    },
-    "ghc-8.6.5-iohk": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1600920045,
-        "narHash": "sha256-DO6kxJz248djebZLpSzTGD6s8WRpNI9BTwUeOf5RwY8=",
-        "owner": "input-output-hk",
-        "repo": "ghc",
-        "rev": "95713a6ecce4551240da7c96b6176f980af75cae",
-        "type": "github"
-      },
-      "original": {
-        "owner": "input-output-hk",
-        "ref": "release/8.6.5-iohk",
-        "repo": "ghc",
-        "type": "github"
-      }
-    },
-    "hackage": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1629940355,
-        "narHash": "sha256-o9/U8R/JtyHIcxhMLaWYP+D/52B6LH/ikCyNZ7+mymI=",
-        "owner": "input-output-hk",
-        "repo": "hackage.nix",
-        "rev": "429deb2a137084c011310bad92f4cecf244f2fc2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "input-output-hk",
-        "repo": "hackage.nix",
-        "type": "github"
-      }
-    },
-    "haskell-nix": {
-      "inputs": {
-        "HTTP": "HTTP",
-        "cabal-32": "cabal-32",
-        "cabal-34": "cabal-34",
-        "cardano-shell": "cardano-shell",
-        "flake-utils": "flake-utils",
-        "ghc-8.6.5-iohk": "ghc-8.6.5-iohk",
-        "hackage": "hackage",
-        "hpc-coveralls": "hpc-coveralls",
-        "nix-tools": "nix-tools",
-        "nixpkgs": "nixpkgs",
-        "nixpkgs-2003": "nixpkgs-2003",
-        "nixpkgs-2009": "nixpkgs-2009",
-        "nixpkgs-2105": "nixpkgs-2105",
-        "nixpkgs-unstable": "nixpkgs-unstable",
-        "old-ghc-nix": "old-ghc-nix",
-        "stackage": "stackage"
-      },
-      "locked": {
-        "lastModified": 1629940530,
-        "narHash": "sha256-cf/bshYWloj+rJSmOcFokN6Rs1lpFkiECKpykN3JBH8=",
-        "owner": "input-output-hk",
-        "repo": "haskell.nix",
-        "rev": "5fcd4faf98fc8ca8287e2c7bc1fff71dfd340f1f",
-        "type": "github"
-      },
-      "original": {
-        "owner": "input-output-hk",
-        "repo": "haskell.nix",
-        "type": "github"
-      }
-    },
-    "hpc-coveralls": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1607498076,
-        "narHash": "sha256-8uqsEtivphgZWYeUo5RDUhp6bO9j2vaaProQxHBltQk=",
-        "owner": "sevanspowell",
-        "repo": "hpc-coveralls",
-        "rev": "14df0f7d229f4cd2e79f8eabb1a740097fdfa430",
-        "type": "github"
-      },
-      "original": {
-        "owner": "sevanspowell",
-        "repo": "hpc-coveralls",
-        "type": "github"
-      }
-    },
-    "ldap-client": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1582401733,
-        "narHash": "sha256-StLj8BnQqbl8fnE+xWlSOScVRGnl19cv8d1CBZ29O0k=",
-        "ref": "uni2work",
-        "rev": "01afaf599ba6f8a9d804c269e91d3190b249d3f0",
-        "revCount": 61,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/ldap-client.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/ldap-client.git"
-      }
-    },
-    "memcached-binary": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1582403725,
-        "narHash": "sha256-40BNhNNYC/B4u16dKwBrkk5hmhncq805YC4y1aGFRqs=",
-        "ref": "uni2work",
-        "rev": "b7071df50bad3a251a544b984e4bf98fa09b8fae",
-        "revCount": 28,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/memcached-binary.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/memcached-binary.git"
-      }
-    },
-    "minio-hs": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1597069863,
-        "narHash": "sha256-JmMajaLT4+zt+w2koDkaloFL8ugmrQBlcYKj+78qn9M=",
-        "ref": "uni2work",
-        "rev": "42103ab247057c04c8ce7a83d9d4c160713a3df1",
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-        "type": "git",
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-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/minio-hs.git"
-      }
-    },
-    "nix-tools": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1626997434,
-        "narHash": "sha256-1judQmP298ao6cGUNxcGhcAXHOnA9qSLvWk/ZtoUL7w=",
-        "owner": "input-output-hk",
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-        "repo": "nix-tools",
-        "type": "github"
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-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1624291665,
-        "narHash": "sha256-kNkaoa3dai9WOi7fsPklCCWZ8hRAkXx0ZUhpYKShyUk=",
+        "lastModified": 1624788075,
+        "narHash": "sha256-xzO2aL5gGejNvey2jKGnbnFXbo99pdytlY5FF/IhvAE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3c6f3f84af60a8ed5b8a79cf3026b7630fcdefb8",
+        "rev": "4ba70da807359ed01d662763a96c7b442762e5ef",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixpkgs-20.09-darwin",
+        "ref": "master",
         "repo": "nixpkgs",
         "type": "github"
       }
     },
-    "nixpkgs-2003": {
-      "locked": {
-        "lastModified": 1620055814,
-        "narHash": "sha256-8LEHoYSJiL901bTMVatq+rf8y7QtWuZhwwpKE2fyaRY=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
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-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2009": {
-      "locked": {
-        "lastModified": 1624271064,
-        "narHash": "sha256-qns/uRW7MR2EfVf6VEeLgCsCp7pIOjDeR44JzTF09MA=",
-        "owner": "NixOS",
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-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-2105": {
-      "locked": {
-        "lastModified": 1624291665,
-        "narHash": "sha256-kNkaoa3dai9WOi7fsPklCCWZ8hRAkXx0ZUhpYKShyUk=",
-        "owner": "NixOS",
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-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-unstable": {
-      "locked": {
-        "lastModified": 1628785280,
-        "narHash": "sha256-2B5eMrEr6O8ff2aQNeVxTB+9WrGE80OB4+oM6T7fOcc=",
-        "owner": "NixOS",
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-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "old-ghc-nix": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1621819714,
-        "narHash": "sha256-EJCnYQSWk7FRLwS0lZgTWIiQ6pcvDX1VuD6LGD4Uwzs=",
-        "owner": "angerman",
-        "repo": "old-ghc-nix",
-        "rev": "f089a6f090cdb35fcf95f865fc6a31ba6b3ac4eb",
-        "type": "github"
-      },
-      "original": {
-        "owner": "angerman",
-        "ref": "master2",
-        "repo": "old-ghc-nix",
-        "type": "github"
-      }
-    },
     "root": {
       "inputs": {
-        "HaskellNet-SSL": "HaskellNet-SSL",
-        "colonnade": "colonnade",
-        "conduit-resumablesink": "conduit-resumablesink",
-        "cryptoids": "cryptoids",
-        "cryptonite": "cryptonite",
-        "docker-nixpkgs": "docker-nixpkgs",
-        "encoding": "encoding",
-        "esqueleto": "esqueleto",
-        "flake-utils": [
-          "haskell-nix",
-          "flake-utils"
-        ],
-        "fontawesome-token": "fontawesome-token",
-        "haskell-nix": "haskell-nix",
-        "ldap-client": "ldap-client",
-        "memcached-binary": "memcached-binary",
-        "minio-hs": "minio-hs",
-        "nixpkgs": [
-          "haskell-nix",
-          "nixpkgs-unstable"
-        ],
-        "serversession": "serversession",
-        "xss-sanitize": "xss-sanitize",
-        "yesod": "yesod",
-        "zip-stream": "zip-stream"
-      }
-    },
-    "serversession": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1624794082,
-        "narHash": "sha256-mixhAsgOq0iiAhOcZfFSyl8CwS7utaKeZBz/Lix16hk=",
-        "ref": "uni2work",
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-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/serversession.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/serversession.git"
-      }
-    },
-    "stackage": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1629940472,
-        "narHash": "sha256-LFrNC25OpNoS6dGG5om+UGP8YdYjp01Qm6cenbemaVg=",
-        "owner": "input-output-hk",
-        "repo": "stackage.nix",
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-        "repo": "stackage.nix",
-        "type": "github"
-      }
-    },
-    "xss-sanitize": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1602593438,
-        "narHash": "sha256-2jAHm79x8f+ygGHq9gipF3h8+eMT7eCxVMOGMc/brKE=",
-        "ref": "uni2work",
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-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/xss-sanitize.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/xss-sanitize.git"
-      }
-    },
-    "yesod": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1625061191,
-        "narHash": "sha256-K0X2MwUStChml1DlJ7t4yBMDwrMe6j/780nJtSy9Hss=",
-        "ref": "uni2work",
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-        "type": "git",
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-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/yesod.git"
-      }
-    },
-    "zip-stream": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1599734754,
-        "narHash": "sha256-gqIlgj2dxVkqEMafuVL+dqZPoV+WLpOJwz1NhsKnH64=",
-        "ref": "uni2work",
-        "rev": "843683d024f767de236f74d24a3348f69181a720",
-        "revCount": 39,
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/zip-stream.git"
-      },
-      "original": {
-        "ref": "uni2work",
-        "type": "git",
-        "url": "https://gitlab.ifi.lmu.de/uni2work/haskell/zip-stream.git"
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
       }
     }
   },