diff --git a/.gitignore b/.gitignore
index 7766591..c8d9934 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,7 @@ cabal.project.local
 bench.html
 splitmix-hugs
 hugs.output
+
+# nix
+result
+result-*
diff --git a/Makefile b/Makefile
index 5caba15..c7d1636 100644
--- a/Makefile
+++ b/Makefile
@@ -34,3 +34,20 @@ generate-mix32 :
 doctest :
 	perl -i -e 'while (<ARGV>) { print unless /package-id base-compat-\d+(\.\d+)*/; }' .ghc.environment.*
 	doctest src
+
+native:
+	nix-build -A native.splitmix
+
+freebsd:
+	nix-build -A freebsd.splitmix
+
+android:
+	nix-build -A android.splitmix
+
+js:
+	nix-build -A js.splitmix
+
+wasm:
+	nix shell \
+	  'gitlab:haskell-wasm/ghc-wasm-meta/7927129e42bcd6a54b9e06e26455803fa4878261?host=gitlab.haskell.org' \
+	  --command sh -c "wasm32-wasi-cabal update && wasm32-wasi-cabal test all --ghc-options='-single-threaded' --test-wrapper=wasmtime"
diff --git a/cabal.project b/cabal.project
index c7e29bd..5331712 100644
--- a/cabal.project
+++ b/cabal.project
@@ -5,3 +5,10 @@ tests: True
 allow-newer: async-2.2.5:base
 allow-newer: hashable-1.4.4.0:base
 allow-newer: hashable-1.4.4.0:containers
+
+-- Due to error when building 'splitmix-tests': undefined symbol: gethostname
+if arch(wasm32)
+  source-repository-package
+    type: git
+    location: https://github.com/haskell-wasm/hostname
+    tag: 8d110f03b3117af233683ac90b125fcfc767a2ef
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..aa982d7
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,43 @@
+let
+  pins = {
+    # merge ancestor of https://github.com/NixOS/nixpkgs/pull/413046
+    nixpkgs = builtins.fetchTarball {
+      url = "https://github.com/NixOS/nixpkgs/archive/3ea4dc04503b4370e06eca0e43c062c8b11883fa.tar.gz";
+      sha256 = "sha256:04ygvidh3l3ls755b2wgl148567n9rnj168s87j03agly5wrf19c";
+    };
+  };
+
+  defaultNixpkgs = import pins.nixpkgs {};
+
+  cachedPackageSetVersion = "ghc" + builtins.replaceStrings ["."] [""] defaultNixpkgs.haskellPackages.ghc.version;
+
+  mkNixpkgs = version: import pins.nixpkgs {
+    config = {
+      packageOverrides = nixpkgs: with nixpkgs.haskell.lib.compose; {
+        haskell = nixpkgs.haskell // {
+          packages = nixpkgs.haskell.packages // {
+            "${version}" = nixpkgs.haskell.packages.${version}.override(old: {
+              overrides = self: super: {
+                # callCabal2nix is broken because of testu01 being missing so re-use splitmix drv
+                splitmix = overrideSrc
+                  { src = nixpkgs.lib.sourceFilesBySuffices ./. [ ".hs" ".cabal" ".c" ".md" "LICENSE" ]; }
+                  super.splitmix;
+              };
+            });
+          };
+        };
+      };
+    };
+  };
+
+  build = version: getPkgs: ((getPkgs (mkNixpkgs version)).haskell.packages.${version});
+
+  in {
+      native = build cachedPackageSetVersion (ps: ps);
+
+      freebsd = build cachedPackageSetVersion (ps: ps.pkgsCross.x86_64-freebsd);
+
+      android = build "ghc910" (ps: ps.pkgsCross.aarch64-android-prebuilt.pkgsStatic);
+
+      js = build "ghc912" (ps: ps.pkgsCross.ghcjs);
+    }