diff --git a/bin/nix-build-and-cache b/bin/nix-build-and-cache
index e466bc83..3e39e91f 100755
--- a/bin/nix-build-and-cache
+++ b/bin/nix-build-and-cache
@@ -52,7 +52,7 @@ just() {
         "${ATTIC_ENDPOINT:-https://attic.kennel.juneis.dog/conduwuit}" \
         "$ATTIC_TOKEN"
 
-    # Upload them to Attic (conduwuit store)
+    # Upload them to Attic (conduwuit store) and Cachix
     #
     # Use `xargs` and a here-string because something would probably explode if
     # several thousand arguments got passed to a command at once. Hopefully no
@@ -61,6 +61,12 @@ just() {
         IFS=$'\n'
         nix shell --inputs-from "$toplevel" attic -c xargs \
             attic push conduwuit <<< "${cache[*]}"
+
+        # push to cachix if available
+        if [ "$CACHIX_AUTH_TOKEN" ]; then
+            nix shell --inputs-from "$toplevel" cachix -c xargs \
+            cachix push conduwuit <<< "${cache[*]}"
+        fi
     )
 }
 
@@ -73,6 +79,7 @@ ci() {
         "$toplevel#devShells.x86_64-linux.default"
         "$toplevel#devShells.x86_64-linux.all-features"
         attic#default
+        cachix#default
         nixpkgs#direnv
         nixpkgs#jq
         nixpkgs#nix-direnv
diff --git a/flake.lock b/flake.lock
index 0a4efdbe..7cd38d07 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,6 +23,28 @@
         "type": "github"
       }
     },
+    "cachix": {
+      "inputs": {
+        "devenv": "devenv",
+        "flake-compat": "flake-compat_3",
+        "nixpkgs": "nixpkgs_3",
+        "pre-commit-hooks": "pre-commit-hooks"
+      },
+      "locked": {
+        "lastModified": 1717420532,
+        "narHash": "sha256-OCCmI69EMaA4BcxRKrXJsx5Ozua2f/PKEy4aJbE7ziM=",
+        "owner": "cachix",
+        "repo": "cachix",
+        "rev": "5727f0676f08a4b41ed13d403ec64dcce989f6e5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "master",
+        "repo": "cachix",
+        "type": "github"
+      }
+    },
     "complement": {
       "flake": false,
       "locked": {
@@ -82,6 +104,35 @@
         "type": "github"
       }
     },
+    "devenv": {
+      "inputs": {
+        "flake-compat": [
+          "cachix",
+          "flake-compat"
+        ],
+        "nix": "nix",
+        "nixpkgs": "nixpkgs_2",
+        "poetry2nix": "poetry2nix",
+        "pre-commit-hooks": [
+          "cachix",
+          "pre-commit-hooks"
+        ]
+      },
+      "locked": {
+        "lastModified": 1708704632,
+        "narHash": "sha256-w+dOIW60FKMaHI1q5714CSibk99JfYxm0CzTinYWr+Q=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "2ee4450b0f4b95a1b90f2eb5ffea98b90e48c196",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "python-rewrite",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
     "fenix": {
       "inputs": {
         "nixpkgs": [
@@ -121,6 +172,54 @@
       }
     },
     "flake-compat_2": {
+      "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-compat_3": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_4": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_5": {
       "flake": false,
       "locked": {
         "lastModified": 1696426674,
@@ -156,6 +255,42 @@
       "inputs": {
         "systems": "systems"
       },
+      "locked": {
+        "lastModified": 1689068808,
+        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_3": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_4": {
+      "inputs": {
+        "systems": "systems_3"
+      },
       "locked": {
         "lastModified": 1710146030,
         "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
@@ -171,6 +306,28 @@
         "type": "github"
       }
     },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "cachix",
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "liburing": {
       "flake": false,
       "locked": {
@@ -188,6 +345,31 @@
         "type": "github"
       }
     },
+    "nix": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "nixpkgs": [
+          "cachix",
+          "devenv",
+          "nixpkgs"
+        ],
+        "nixpkgs-regression": "nixpkgs-regression"
+      },
+      "locked": {
+        "lastModified": 1708577783,
+        "narHash": "sha256-92xq7eXlxIT5zFNccLpjiP7sdQqQI30Gyui2p/PfKZM=",
+        "owner": "domenkozar",
+        "repo": "nix",
+        "rev": "ecd0af0c1f56de32cbad14daa1d82a132bf298f8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "domenkozar",
+        "ref": "devenv-2.21",
+        "repo": "nix",
+        "type": "github"
+      }
+    },
     "nix-filter": {
       "locked": {
         "lastModified": 1710156097,
@@ -204,6 +386,29 @@
         "type": "github"
       }
     },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "cachix",
+          "devenv",
+          "poetry2nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1688870561,
+        "narHash": "sha256-4UYkifnPEw1nAzqqPOTL2MvWtm3sNGw1UTYTalkTcGY=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "165b1650b753316aa7f1787f3005a8d2da0f5301",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1711401922,
@@ -220,6 +425,22 @@
         "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": {
       "locked": {
         "lastModified": 1711460390,
@@ -236,7 +457,55 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable_2": {
+      "locked": {
+        "lastModified": 1710695816,
+        "narHash": "sha256-3Eh7fhEID17pv9ZxrPwCLfqXnYP006RKzSs0JptsN84=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "614b4613980a522ba49f0d194531beddbb7220d3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1692808169,
+        "narHash": "sha256-x9Opq06rIiwdwGeK2Ykj69dNc2IvUH1fY55Wm7atwrE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9201b5ff357e781bf014d0330d18555695df7ba8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1715534503,
+        "narHash": "sha256-5ZSVkFadZbFP1THataCaSf0JH2cAH3S29hU9rrxTEqk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "2057814051972fa1453ddfb0d98badbea9b83c06",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_4": {
       "locked": {
         "lastModified": 1716330097,
         "narHash": "sha256-8BO3B7e3BiyIDsaKA0tY8O88rClYRTjvAp66y+VBUeU=",
@@ -252,6 +521,55 @@
         "type": "github"
       }
     },
+    "poetry2nix": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": [
+          "cachix",
+          "devenv",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1692876271,
+        "narHash": "sha256-IXfZEkI0Mal5y1jr6IRWMqK8GW2/f28xJenZIPQqkY0=",
+        "owner": "nix-community",
+        "repo": "poetry2nix",
+        "rev": "d5006be9c2c2417dafb2e2e5034d83fabd207ee3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "poetry2nix",
+        "type": "github"
+      }
+    },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat_4",
+        "flake-utils": "flake-utils_3",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "cachix",
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": "nixpkgs-stable_2"
+      },
+      "locked": {
+        "lastModified": 1715609711,
+        "narHash": "sha256-/5u29K0c+4jyQ8x7dUIEUWlz2BoTSZWUP2quPwFCE7M=",
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "rev": "c182c876690380f8d3b9557c4609472ebfa1b141",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "pre-commit-hooks.nix",
+        "type": "github"
+      }
+    },
     "rocksdb": {
       "flake": false,
       "locked": {
@@ -272,14 +590,15 @@
     "root": {
       "inputs": {
         "attic": "attic",
+        "cachix": "cachix",
         "complement": "complement",
         "crane": "crane_2",
         "fenix": "fenix",
-        "flake-compat": "flake-compat_2",
-        "flake-utils": "flake-utils_2",
+        "flake-compat": "flake-compat_5",
+        "flake-utils": "flake-utils_4",
         "liburing": "liburing",
         "nix-filter": "nix-filter",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_4",
         "rocksdb": "rocksdb"
       }
     },
@@ -314,6 +633,36 @@
         "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"
+      }
+    },
+    "systems_3": {
+      "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",
diff --git a/flake.nix b/flake.nix
index a9399cd8..acaf0dae 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,7 @@
 {
   inputs = {
     attic.url = "github:zhaofengli/attic?ref=main";
+    cachix.url = "github:cachix/cachix?ref=master";
     complement = { url = "github:matrix-org/complement?ref=main"; flake = false; };
     crane = { url = "github:ipetkov/crane?ref=master"; inputs.nixpkgs.follows = "nixpkgs"; };
     fenix = { url = "github:nix-community/fenix?ref=main"; inputs.nixpkgs.follows = "nixpkgs"; };