diff --git a/.gitignore b/.gitignore
index 4abad8d..626d602 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+result
 dist-newstyle
 .cache
 _site
diff --git a/README.md b/README.md
index 0f63246..1b84fa0 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 my personal website, made with [achille](https://acatalepsie.fr/projects/achille).
 
+```
+nix-shell --attr env release.nix
+nix-env -if release.nix
+```
+
 ## todo
 
 - dark theme
diff --git a/acatalepsie.nix b/acatalepsie.nix
new file mode 100644
index 0000000..e3bc6b6
--- /dev/null
+++ b/acatalepsie.nix
@@ -0,0 +1,17 @@
+{ mkDerivation, achille, aeson, base, binary, bytestring
+, containers, data-default, feed, filepath, lucid, pandoc
+, pandoc-types, sort, stdenv, text, time, yaml
+}:
+mkDerivation {
+  pname = "site";
+  version = "0.1.0.0";
+  src = ./.;
+  isLibrary = false;
+  isExecutable = true;
+  executableHaskellDepends = [
+    achille aeson base binary bytestring containers data-default feed
+    filepath lucid pandoc pandoc-types sort text time yaml
+  ];
+  license = "unknown";
+  hydraPlatforms = stdenv.lib.platforms.none;
+}
diff --git a/cabal.project b/cabal.project
deleted file mode 100644
index 6ed4d7b..0000000
--- a/cabal.project
+++ /dev/null
@@ -1,6 +0,0 @@
-packages:
-  ./
-  ../achille
-
-package site
-  optimization: True
diff --git a/content/assets/theme.css b/content/assets/theme.css
index 749a250..869b774 100644
--- a/content/assets/theme.css
+++ b/content/assets/theme.css
@@ -13,7 +13,7 @@
 }
 
 body {
-  font: 15px Inter, sans-serif;
+  font: 15px Inter, sans-serif, "é";
   line-height: 1.54;
   margin: 0;
   height: 100vh;
diff --git a/release.nix b/release.nix
new file mode 100644
index 0000000..264ece0
--- /dev/null
+++ b/release.nix
@@ -0,0 +1,16 @@
+let
+  compiler = "ghc884";
+  rev  = "b78e08e981a9ad31036fc6c6fb880c1315b4ebea";
+  overlay = _: pkgs: {
+    haskellPackages = pkgs.haskellPackages.override {
+      overrides = self: super: rec {
+        achille = self.callPackage ../achille/achille.nix {};
+      };
+    };
+  };
+  nixpkgs =
+    import (builtins.fetchTarball {
+      url = "https://github.com/NixOS/nixpkgs/archive/${rev}.tar.gz";
+    }) { overlays = [ overlay ] ; };
+
+in nixpkgs.haskellPackages.callPackage ./acatalepsie.nix {}
diff --git a/site.cabal b/site.cabal
index 344e89b..266552d 100644
--- a/site.cabal
+++ b/site.cabal
@@ -17,7 +17,7 @@ executable site
                      , Visual
                      , Templates
                      , Readings
-  build-depends:       base >=4.12 && <4.13
+  build-depends:       base >= 4.12 && < 5
                      , filepath
                      , achille
                      , data-default