diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..2f9c8df2
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,2 @@
+echo "Loading devShell from $(basename $(pwd))/flake.nix"
+use flake .
diff --git a/.gitignore b/.gitignore
index 17d4923a..e9f9d788 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,5 +24,8 @@ medusa
 # Medusa docs
 docs/book
 
+# direnv cache
+.direnv/
+
 # Build results
 result
diff --git a/flake.lock b/flake.lock
index d853ed8a..b4a980f7 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,24 +1,41 @@
 {
   "nodes": {
-    "flake-utils": {
+    "crytic": {
       "inputs": {
-        "systems": "systems"
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
       },
       "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "lastModified": 1737144574,
+        "narHash": "sha256-gtDiJT/kgZYTYGnDI3yGDBYV07zCcdtTV2mharK7I8w=",
+        "owner": "crytic",
+        "repo": "crytic.nix",
+        "rev": "d124ffa7897180de5a28127b6b5b13fd5ba2392a",
         "type": "github"
       },
       "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
+        "owner": "crytic",
+        "repo": "crytic.nix",
         "type": "github"
       }
     },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1726159525,
+        "narHash": "sha256-YQDGrIjCoNkcQAov8PznFVH+WtgeRLIAHfa3AEEPeQA=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "856556b164d56f63434d2dd3e954f00f4b3a075f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "856556b164d56f63434d2dd3e954f00f4b3a075f",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1735669367,
         "narHash": "sha256-tfYRbFhMOnYaM4ippqqid3BaLOXoFNdImrfBfCp4zn0=",
@@ -35,8 +52,9 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "crytic": "crytic",
+        "nixpkgs": "nixpkgs_2",
+        "utils": "utils_2"
       }
     },
     "systems": {
@@ -53,6 +71,58 @@
         "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"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      }
+    },
+    "utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index fd31f4de..ac5b157d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,122 +3,64 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-24.11";
-    flake-utils.url = "github:numtide/flake-utils";
+    utils.url = "github:numtide/flake-utils";
+    crytic.url = "github:crytic/crytic.nix";
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = import nixpkgs { inherit system; config.allowUnfree = true; };
-        pyCommon = {
-          format = "pyproject";
-          nativeBuildInputs = with pkgs.python3Packages; [ pythonRelaxDepsHook ];
-          pythonRelaxDeps = true;
-          doCheck = false;
-        };
-      in
-      rec {
-
-        packages = rec {
-
-          solc-select = pkgs.python3Packages.buildPythonPackage (pyCommon // {
-            pname = "solc-select";
-            version = "1.0.4";
-            src = builtins.fetchGit {
-              url = "https://github.com/crytic/solc-select.git";
-              rev = "8072a3394bdc960c0f652fb72e928a7eae3631da";
-            };
-            propagatedBuildInputs = with pkgs.python3Packages; [
-              packaging
-              setuptools
-              pycryptodome
-            ];
-          });
-
-          crytic-compile = pkgs.python3Packages.buildPythonPackage (pyCommon // rec {
-            pname = "crytic-compile";
-            version = "0.3.7";
-            src = builtins.fetchGit {
-              url = "https://github.com/crytic/crytic-compile.git";
-              rev = "20df04f37af723eaa7fa56dc2c80169776f3bc4d";
-            };
-            propagatedBuildInputs = with pkgs.python3Packages; [
-              cbor2
-              pycryptodome
-              setuptools
-              packages.solc-select
-            ];
-          });
-
-          slither = pkgs.python3Packages.buildPythonPackage (pyCommon // rec {
-            pname = "slither";
-            version = "0.10.4";
-            format = "pyproject";
-            src = builtins.fetchGit {
-              url = "https://github.com/crytic/slither.git";
-              rev = "aeeb2d368802844733671e35200b30b5f5bdcf5c";
-            };
-            nativeBuildInputs = with pkgs.python3Packages; [ pythonRelaxDepsHook ];
-            pythonRelaxDeps = true;
-            doCheck = false;
-            propagatedBuildInputs = with pkgs.python3Packages; [
-              packaging
-              prettytable
-              pycryptodome
-              packages.crytic-compile
-              web3
-            ];
-          });
-
-          medusa = pkgs.buildGoModule {
-            pname = "medusa";
-            version = "0.1.8"; # from cmd/root.go
-            src = ./.;
-            vendorHash = "sha256-12Xkg5dzA83HQ2gMngXoLgu1c9KGSL6ly5Qz/o8U++8=";
-            nativeBuildInputs = [
-              packages.crytic-compile
-              pkgs.solc
-              pkgs.nodejs
-            ];
-            doCheck = false; # tests require `npm install` which can't run in hermetic build env
-          };
-
-          default = medusa;
+  outputs = inputs: with inputs;
+    utils.lib.eachDefaultSystem (system: let
+      pkgs = import nixpkgs { inherit system; config.allowUnfree = true; };
+    in rec {
 
+      packages = {
+        medusa = pkgs.buildGoModule {
+          pname = "medusa";
+          version = 1.0.0;
+          src = ./.;
+          vendorHash = "sha256-12Xkg5dzA83HQ2gMngXoLgu1c9KGSL6ly5Qz/o8U++8=";
+          nativeBuildInputs = [
+            crytic.packages.${system}.crytic-compile
+            crytic.packages.${system}.slither
+            pkgs.solc
+            pkgs.nodejs
+          ];
+          doCheck = false; # tests require `npm install` which can't run in hermetic build env
         };
+        default = packages.medusa;
+      };
 
-        apps = {
-          default = {
-            type = "app";
-            program = "${self.packages.${system}.medusa}/bin/medusa";
-          };
+      apps = {
+        default = {
+          type = "app";
+          program = "${self.packages.${system}.medusa}/bin/medusa";
         };
+      };
 
-        devShells = {
-          default = pkgs.mkShell {
-            buildInputs = with pkgs; [
-              packages.medusa
-              bashInteractive
-              # runtime dependencies
-              packages.crytic-compile
-              packages.slither
-              solc
-              # test dependencies
-              nodejs
-              # go development
-              go
-              gotools
-              go-tools
-              gopls
-              go-outline
-              gopkgs
-              gocode-gomod
-              godef
-              golint
-            ];
-          };
+      devShells = {
+        default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            packages.medusa
+            bashInteractive
+            # runtime dependencies
+            crytic.packages.${system}.crytic-compile
+            crytic.packages.${system}.slither
+            solc
+            # test dependencies
+            nodejs
+            # go development
+            go
+            gotools
+            go-tools
+            gopls
+            go-outline
+            gopkgs
+            gocode-gomod
+            godef
+            golint
+          ];
         };
+      };
 
-      }
-    );
+    }
+  );
 }