diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..c1ce3a8
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[registries]
+procyos = { index = "sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/" }
diff --git a/Cargo.lock b/Cargo.lock
index 2c01bb1..1b76e55 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -35,7 +35,8 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 [[package]]
 name = "extra-math"
 version = "0.1.0"
-source = "git+https://git.chir.rs/ProcyOS/extra_math.git#38d6abf85718d053f45c6b77c88607f245be55e0"
+source = "sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/"
+checksum = "fa1061c295d9aba46636f4a0b16372ea314fcd6c8dfaf447cc719a6a9dce63aa"
 dependencies = [
  "libm",
  "num-traits",
diff --git a/Cargo.nix b/Cargo.nix
index 58eaf29..1593b6e 100644
--- a/Cargo.nix
+++ b/Cargo.nix
@@ -22,7 +22,7 @@ args @ {
   workspaceSrc,
   ignoreLockHash,
 }: let
-  nixifiedLockHash = "a2b590ebe54f290db87e552bf935f4bb11098b9ba02841e8ed499aad10c57419";
+  nixifiedLockHash = "74300319bd44e956ec1895afc04c903cca3100257d7c627ba18911908b487b47";
   workspaceSrc =
     if args.workspaceSrc == null
     then ./.
@@ -113,15 +113,15 @@ in
       };
     });
 
-    "git+https://git.chir.rs/ProcyOS/extra_math.git".extra-math."0.1.0" = overridableMkRustCrate (profileName: rec {
+    "sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/".extra-math."0.1.0" = overridableMkRustCrate (profileName: rec {
       name = "extra-math";
       version = "0.1.0";
-      registry = "git+https://git.chir.rs/ProcyOS/extra_math.git";
-      src = fetchCrateGit {
-        url = "https://git.chir.rs/ProcyOS/extra_math.git";
+      registry = "sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/";
+      src = fetchCrateAlternativeRegistry {
+        index = sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/;
         name = "extra-math";
         version = "0.1.0";
-        rev = "38d6abf85718d053f45c6b77c88607f245be55e0";
+        sha256 = "fa1061c295d9aba46636f4a0b16372ea314fcd6c8dfaf447cc719a6a9dce63aa";
       };
       features = builtins.concatLists [
         ["default"]
@@ -351,7 +351,7 @@ in
       ];
       dependencies = {
         bitvec = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".bitvec."1.0.1" {inherit profileName;}).out;
-        extra_math = (rustPackages."git+https://git.chir.rs/ProcyOS/extra_math.git".extra-math."0.1.0" {inherit profileName;}).out;
+        extra_math = (rustPackages."sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/".extra-math."0.1.0" {inherit profileName;}).out;
         libm = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".libm."0.2.8" {inherit profileName;}).out;
         num_traits = (rustPackages."registry+https://github.com/rust-lang/crates.io-index".num-traits."0.2.19" {inherit profileName;}).out;
         ${
diff --git a/Cargo.toml b/Cargo.toml
index eb6c99a..9b24fd8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ categories = ["development-tools::testing", "no-std", "no-std::no-alloc"]
 
 [dependencies]
 bitvec = { version = "1.0.1", default-features = false }
-extra-math = { git = "https://git.chir.rs/ProcyOS/extra_math.git", version = "0.1.0" }
+extra-math = { version = "0.1.0", registry = "procyos" }
 libm = "0.2.8"
 num-traits = { version = "0.2.19", default-features = false, features = [
     "libm",
diff --git a/flake.lock b/flake.lock
index 5ee1480..f70cbcd 100644
--- a/flake.lock
+++ b/flake.lock
@@ -14,16 +14,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1713199118,
-        "narHash": "sha256-MlLdAvk+zXCFUy280sY6LqtykqWXIkKVXo72J7a6HlU=",
-        "owner": "cargo2nix",
+        "lastModified": 1725812914,
+        "narHash": "sha256-xYdN9kbpLScjJGll6IE7Cnnn1UhIMKUwGyrzKjQvPgI=",
+        "owner": "DarkKirb",
         "repo": "cargo2nix",
-        "rev": "1efb03f2f794ad5eed17e807e858c4da001dbc3e",
+        "rev": "7bb1ee00029ab2e7bd8ba03f5563cdbb998ab6f7",
         "type": "github"
       },
       "original": {
-        "owner": "cargo2nix",
-        "ref": "main",
+        "owner": "DarkKirb",
+        "ref": "master",
         "repo": "cargo2nix",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 51aee8d..a2535ec 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,7 +12,7 @@
     };
 
     cargo2nix = {
-      url = github:cargo2nix/cargo2nix/main;
+      url = github:DarkKirb/cargo2nix/master;
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.flake-utils.follows = "flake-utils";
       inputs.rust-overlay.follows = "rust-overlay";
@@ -36,6 +36,9 @@
       pkgs = import nixpkgs {
         inherit system overlays;
       };
+      registryDownloadPaths = {
+        "sparse+https://git.chir.rs/api/packages/ProcyOS/cargo/" = "https://git.chir.rs/api/packages/ProcyOS/cargo/api/v1/crates";
+      };
       rustPkgs = pkgs.rustBuilder.makePackageSet {
         packageFun = import ./Cargo.nix;
         rustChannel = "nightly";
@@ -45,6 +48,17 @@
           "rand_testsuite/default"
           "rand_testsuite/full"
         ];
+        fetchCrateAlternativeRegistry = {
+          index,
+          name,
+          version,
+          sha256,
+        }:
+          pkgs.fetchurl {
+            name = "${name}-${version}.tar.gz";
+            url = "${registryDownloadPaths.${index}}/${name}/${version}/download";
+            inherit sha256;
+          };
       };
     in rec {
       devShells.default = with pkgs;