diff --git a/codecs/mozjpeg/Makefile b/codecs/mozjpeg/Makefile
index 012b646c..0a3c4f76 100644
--- a/codecs/mozjpeg/Makefile
+++ b/codecs/mozjpeg/Makefile
@@ -1,10 +1,6 @@
-CODEC_URL := https://github.com/mozilla/mozjpeg/archive/v3.3.1.tar.gz
-CODEC_DIR := node_modules/mozjpeg
-CODEC_OUT_RELATIVE := .libs/libjpeg.a rdswitch.o
-CODEC_OUT := $(addprefix $(CODEC_DIR)/, $(CODEC_OUT_RELATIVE))
 ENVIRONMENT = worker
 
-OUT_JS := enc/mozjpeg_enc.js enc/mozjpeg_node_enc.js dec/mozjpeg_node_dec.js
+OUT_JS := enc/mozjpeg_enc.js 
 OUT_WASM := $(OUT_JS:.js=.wasm)
 
 .PHONY: all clean
@@ -15,47 +11,15 @@ all: $(OUT_JS)
 $(filter enc/%,$(OUT_JS)): enc/mozjpeg_enc.cpp
 $(filter dec/%,$(OUT_JS)): dec/mozjpeg_dec.cpp
 
-enc/mozjpeg_node_enc.js dec/mozjpeg_node_dec.js: ENVIRONMENT = node
-
-%.js: $(CODEC_OUT)
+%.js:
 	$(CXX) \
-		-I $(CODEC_DIR) \
+		-I ${MOZJPEG}/include \
 		${CXXFLAGS} \
 		${LDFLAGS} \
 		--bind \
 		-s ENVIRONMENT=$(ENVIRONMENT) \
 		-s EXPORT_ES6=1 \
 		-o $@ \
-		$+
-
-# This one is a bit special: there is no rule for .libs/libjpeg.a
-#  so we use libjpeg.la which implicitly builds that one instead.
-$(CODEC_DIR)/.libs/libjpeg.a: $(CODEC_DIR)/Makefile
-	$(MAKE) -C $(CODEC_DIR) libjpeg.la
-
-$(CODEC_DIR)/rdswitch.o: $(CODEC_DIR)/Makefile
-	$(MAKE) -C $(CODEC_DIR) rdswitch.o
-
-$(CODEC_DIR)/Makefile: $(CODEC_DIR)/configure
-	cd $(CODEC_DIR) && ./configure \
-		--disable-shared \
-		--without-turbojpeg \
-		--without-simd \
-		--without-arith-enc \
-		--without-arith-dec \
-		--with-build-date=squoosh
-		# ^ If not provided with a dummy value, MozJPEG includes a build date in the
-		# binary as part of the version string, making binaries different each time.
-
-$(CODEC_DIR)/configure: $(CODEC_DIR)/configure.ac
-	cd $(CODEC_DIR) && autoreconf -iv
-
-$(CODEC_DIR)/configure.ac: $(CODEC_DIR)
-
-$(CODEC_DIR):
-	mkdir -p $@
-	curl -sL $(CODEC_URL) | tar xz --strip 1 -C $@
-
-clean:
-	$(RM) $(OUT_JS) $(OUT_WASM)
-	$(MAKE) -C $(CODEC_DIR) clean
+		${MOZJPEG}/lib/rdswitch.o \
+		${MOZJPEG}/lib/libjpeg.a \
+		$+ \
diff --git a/codecs/mozjpeg/flake.lock b/codecs/mozjpeg/flake.lock
new file mode 100644
index 00000000..32d6a0c4
--- /dev/null
+++ b/codecs/mozjpeg/flake.lock
@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "mozjpeg": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1499684294,
+        "narHash": "sha256-frpQdkk7bJE5qbV70fdL1FsC4eI0Fm8FWshqBQxCRtk=",
+        "owner": "mozilla",
+        "repo": "mozjpeg",
+        "rev": "f154ccc091cbc22141cdfd531e5ad1fdc5bc53c7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mozilla",
+        "ref": "v3.3.1",
+        "repo": "mozjpeg",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1722640603,
+        "narHash": "sha256-TcXjLVNd3VeH1qKPH335Tc4RbFDbZQX+d7rqnDUoRaY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "81610abc161d4021b29199aa464d6a1a521e0cc9",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "mozjpeg": "mozjpeg",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/codecs/mozjpeg/flake.nix b/codecs/mozjpeg/flake.nix
new file mode 100644
index 00000000..3c8d913b
--- /dev/null
+++ b/codecs/mozjpeg/flake.nix
@@ -0,0 +1,98 @@
+{
+  inputs = {
+    mozjpeg = {
+      url = "github:mozilla/mozjpeg/v3.3.1";
+      flake = false;
+
+      # type = "github";
+      # owner = "mozilla";
+      # repo = "mozjpeg";
+      # rev = "v3.3.1";
+      # hash = "sha256-frpQdkk7bJE5qbV70fdL1FsC4eI0Fm8FWshqBQxCRtk=";
+    };
+  };
+  outputs =
+    {
+      self,
+      nixpkgs,
+      mozjpeg,
+    }:
+    let
+      system = "aarch64-darwin";
+      pkgs = import nixpkgs { inherit system; };
+    in
+    with pkgs;
+    rec {
+      packages.${system} = {
+      default = stdenv.mkDerivation {
+        name = "mozjpeg-squoosh";
+        src = ./.;
+        nativeBuildInputs = [ emscripten packages.${system}.mozjpeg ];
+        MOZJPEG = packages.${system}.mozjpeg;
+        dontConfigure = true;
+        buildPhase = ''
+          export HOME=$TMPDIR
+          emmake make -j$(nproc)
+        '';
+        installPhase = ''
+          mkdir -p $out
+          cp 
+        '';
+      };
+      mozjpeg = stdenv.mkDerivation {
+        name = "mozjpeg";
+        src = mozjpeg;
+        nativeBuildInputs = [
+          autoconf
+          automake
+          libtool
+          emscripten
+          pkg-config
+        ];
+        preConfigure = ''
+            # $HOME is required for Emscripten to work.
+            # See: https://nixos.org/manual/nixpkgs/stable/#emscripten
+          	export HOME=$TMPDIR
+          	autoreconf -if
+        '';
+        # configurePhase = ''
+
+        #     runHook preConfigure
+        #     emconfigure ./configure $configureFlags
+        #     runHook postConfigure
+        # '';
+        configureScript = "emconfigure ./configure";
+        configureFlags = [
+          "--disable-shared"
+          "--without-turbojpeg"
+          "--without-simd"
+          "--without-arith-enc"
+          "--without-arith-dec"
+          "--with-build-date=squoosh"
+        ];
+        buildFlags = [
+          "libjpeg.la"
+          "rdswitch.o"
+        ];
+        buildPhase = ''
+          	emmake make -j$(nproc) $buildFlags
+        '';
+        installPhase = ''
+            mkdir -p $out/lib
+            mkdir -p $out/include
+            cp .libs/libjpeg.a $out/lib
+            cp rdswitch.o $out/lib
+            cp *.h $out/include
+        '';
+        checkPhase = ''
+          true
+        '';
+      };
+      };
+      devShells.${system}.default = pkgs.mkShell {
+        shellHook = ''
+          echo "Path to MozJPEG: ${mozjpeg}"
+        '';
+      };
+    };
+}