1 files changed, 26 insertions, 0 deletions

diff --git a/server/formal/flake.nix b/server/formal/flake.nix
new file mode 100644
index 0000000..57efa11
--- /dev/null
+++ b/server/formal/flake.nix
@@ -0,0 +1,26 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+
+        # From 22-04-2026
+        stdpp = with pkgs; coqPackages.lib.overrideCoqDerivation {
+          version = "dev";
+          release."dev".sha256 = "hN+sEZcIaFoFF2+4dStTc0TRz5A03US6csEk5q0r/z8=";
+          release."dev".rev = "d3c67aa46ed22b1e593457cd34fc711f1a53b8be";
+        } coqPackages.stdpp;
+      in
+      {
+        devShells.default = with pkgs; mkShell {
+          buildInputs = [ coq stdpp ];
+        };
+
+        formatter = pkgs.nixpkgs-fmt;
+      });
+}