diff --git a/flake.lock b/flake.lock
index 339222bf..bcda9122 100644
--- a/flake.lock
+++ b/flake.lock
@@ -27,11 +27,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1693787605,
-        "narHash": "sha256-rwq5U8dy+a9JFny/73L0SJu1GfWwATMPMTp7D+mjHy8=",
+        "lastModified": 1695511445,
+        "narHash": "sha256-mnE14re43v3/Jc50Jv0BKPMtEk7FEtDSligP6B5HwlI=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "8b4f7a4dab2120cf41e7957a28a853f45016bd9d",
+        "rev": "3de322e06fc88ada5e3589dc8a375b73e749f512",
         "type": "github"
       },
       "original": {
@@ -42,7 +42,7 @@
     },
     "crane_2": {
       "inputs": {
-        "flake-compat": "flake-compat_3",
+        "flake-compat": "flake-compat_4",
         "flake-utils": "flake-utils_4",
         "nixpkgs": [
           "nickel",
@@ -113,6 +113,22 @@
         "type": "github"
       }
     },
+    "flake-compat_4": {
+      "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"
@@ -136,11 +152,11 @@
         "systems": "systems_2"
       },
       "locked": {
-        "lastModified": 1692799911,
-        "narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
         "type": "github"
       },
       "original": {
@@ -154,11 +170,11 @@
         "systems": "systems_3"
       },
       "locked": {
-        "lastModified": 1692799911,
-        "narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
         "type": "github"
       },
       "original": {
@@ -243,21 +259,38 @@
         "type": "github"
       }
     },
+    "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"
+      }
+    },
     "nickel": {
       "inputs": {
         "crane": "crane",
         "flake-utils": "flake-utils_3",
-        "nixpkgs": "nixpkgs",
+        "nix-input": "nix-input",
+        "nixpkgs": "nixpkgs_2",
         "pre-commit-hooks": "pre-commit-hooks",
         "rust-overlay": "rust-overlay_2",
         "topiary": "topiary"
       },
       "locked": {
-        "lastModified": 1695987465,
-        "narHash": "sha256-g7pRTwa2sniIOmgdYCxfYxGRtxnQP8zaVWuPjzEZTSg=",
+        "lastModified": 1700145484,
+        "narHash": "sha256-MBonps3yFEpw9l3EAJ6BXNNjY2fUGzWCP+7h0M8LEAY=",
         "owner": "tweag",
         "repo": "nickel",
-        "rev": "fe2956b57f28ba0b1a17c146afe4f098bddbc8e9",
+        "rev": "4798c4da02ab4240b203de53fb3d04190c434863",
         "type": "github"
       },
       "original": {
@@ -282,19 +315,57 @@
         "type": "github"
       }
     },
+    "nix-input": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "lowdown-src": "lowdown-src",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-regression": "nixpkgs-regression"
+      },
+      "locked": {
+        "lastModified": 1694598107,
+        "narHash": "sha256-JEJSU2O+getWkc+Ql6Dsp72ZGihyZ2Ba7fMdv+ma4TQ=",
+        "owner": "nixos",
+        "repo": "nix",
+        "rev": "b99fdcf8dbb38ec0be0e82f65d1d138ec9e89dda",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1694183432,
-        "narHash": "sha256-YyPGNapgZNNj51ylQMw9lAgvxtM2ai1HZVUu3GS8Fng=",
+        "lastModified": 1695830400,
+        "narHash": "sha256-gToZXQVr0G/1WriO83olnqrLSHF2Jb8BPcmCt497ro0=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "db9208ab987cdeeedf78ad9b4cf3c55f5ebd269b",
+        "rev": "8a86b98f0ba1c405358f1b71ff8b5e1d317f5db2",
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-unstable",
-        "type": "indirect"
+        "owner": "NixOS",
+        "ref": "nixos-22.11-small",
+        "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-stable": {
@@ -314,6 +385,21 @@
       }
     },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1693565476,
+        "narHash": "sha256-ya00zHt7YbPo3ve/wNZ/6nts61xt7wK/APa6aZAfey0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "aa8aa7e2ea35ce655297e8322dc82bf77a31d04b",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1681358109,
         "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
@@ -329,7 +415,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1699099776,
         "narHash": "sha256-X09iKJ27mGsGambGfkKzqvw5esP1L/Rf8H3u3fCqIiU=",
@@ -346,7 +432,7 @@
     },
     "pre-commit-hooks": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "flake-utils": [
           "nickel",
           "flake-utils"
@@ -359,11 +445,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1692274144,
-        "narHash": "sha256-BxTQuRUANQ81u8DJznQyPmRsg63t4Yc+0kcyq6OLz8s=",
+        "lastModified": 1695576016,
+        "narHash": "sha256-71KxwRhTfVuh7kNrg3/edNjYVg9DCyKZl2QIKbhRggg=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "7e3517c03d46159fdbf8c0e5c97f82d5d4b0c8fa",
+        "rev": "cb770e93516a1609652fa8e945a0f310e98f10c0",
         "type": "github"
       },
       "original": {
@@ -376,7 +462,7 @@
       "inputs": {
         "flake-utils": "flake-utils",
         "nickel": "nickel",
-        "nixpkgs": "nixpkgs_3"
+        "nixpkgs": "nixpkgs_4"
       }
     },
     "rust-overlay": {
@@ -393,11 +479,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1693707092,
-        "narHash": "sha256-HR1EnynBSPqbt+04/yxxqsG1E3n6uXrOl7SPco/UnYo=",
+        "lastModified": 1695003086,
+        "narHash": "sha256-d1/ZKuBRpxifmUf7FaedCqhy0lyVbqj44Oc2s+P5bdA=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "98ccb73e6eefc481da6039ee57ad8818d1ca8d56",
+        "rev": "b87a14abea512d956f0b89d0d8a1e9b41f3e20ff",
         "type": "github"
       },
       "original": {
@@ -418,11 +504,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1694225334,
-        "narHash": "sha256-f3uOfcfmG53biFl6zHPHSFrBucLGQp0LpRYQJlozZSA=",
+        "lastModified": 1696039808,
+        "narHash": "sha256-7TbAr9LskWG6ISPhUdyp6zHboT7FsFrME5QsWKybPTA=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "1b4fad9dccece45c25b9ebda607427d69a8f1eae",
+        "rev": "a4c3c904ab29e04a20d3a6da6626d66030385773",
         "type": "github"
       },
       "original": {
@@ -463,7 +549,7 @@
     "rust-overlay_4": {
       "inputs": {
         "flake-utils": "flake-utils_6",
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs_3"
       },
       "locked": {
         "lastModified": 1689042658,
@@ -582,11 +668,11 @@
         "rust-overlay": "rust-overlay_4"
       },
       "locked": {
-        "lastModified": 1694248253,
-        "narHash": "sha256-28OIjnl4O/BMLSQZ88Vxf0E4fgZ3m0UWZq/3Odd4UNY=",
+        "lastModified": 1695289853,
+        "narHash": "sha256-EgDFjJeGJb36je/be7DXvzvpBYDUaupOiQxtL7bN/+Q=",
         "owner": "tweag",
         "repo": "topiary",
-        "rev": "fe6083d2b7c762f5e8c63b9c79a8bd3ced12ea5d",
+        "rev": "8299a04bf83c4a2774cbbff7a036c022efa939b3",
         "type": "github"
       },
       "original": {