diff --git a/.github/workflows/cachix-install-nix-action.yml b/.github/workflows/cachix-install-nix-action.yml
new file mode 100644
index 000000000..daa6d5cdc
--- /dev/null
+++ b/.github/workflows/cachix-install-nix-action.yml
@@ -0,0 +1,34 @@
+name: Nix Flake actions
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  nix-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v30
+      - id: set-matrix
+        name: Generate Nix Matrix
+        run: |
+          set -Eeu
+          matrix="$(nix eval --json '.#githubActions.matrix')"
+          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
+
+  nix-build:
+    name: ${{ matrix.name }} (${{ matrix.system }})
+    needs: nix-matrix
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix: ${{fromJSON(needs.nix-matrix.outputs.matrix)}}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: n1hility/cancel-previous-runs@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: cachix/install-nix-action@v30
+      - run: nix build -L '.#${{ matrix.attr }}'
diff --git a/Makefile b/Makefile
index 553b99a24..be1a87291 100644
--- a/Makefile
+++ b/Makefile
@@ -5,10 +5,12 @@ CROSS ?= none
 
 UNAME_S := $(shell uname -s)
 UNAME_M := $(shell uname -m)
-rwildcard=$(wildcard $1$2) $(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2))
+rwildcard = $(wildcard $1$2) $(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2))
 CC_IS_CLANG := $(shell $(CC) --version | grep -q clang && echo true || echo false)
 
-PACKAGES := capstone freetype2 glfw3 libavcodec libavformat libavutil libswresample libuv zlib libcurl
+PACKAGES := capstone freetype2 glfw3 libavcodec libavformat libavutil libswresample libcurl libuv zlib
+OPTIONAL_PACKAGES := md4c fmt libllhttp libluv liburiparser
+OPTIONAL_LIBRARIES := multipart ucl
 
 LOCALES := el es_ES fr ja pt_BR uk zh_CN
 
@@ -19,12 +21,11 @@ HAS_SUBMODULES = true
 endif
 
 CXXFLAGS += -std=c++2b
-CPPFLAGS += `pkg-config --cflags $(PACKAGES)`
 CPPFLAGS += -I.
 CPPFLAGS += -Isrc
 CPPFLAGS += -Ithird_party
 CPPFLAGS += -Ithird_party/ELFIO
-CPPFLAGS += -Ithird_party/fmt/include/
+CPPFLAGS_pkg_fmt += -Ithird_party/fmt/include/
 CPPFLAGS += -Ithird_party/gl3w
 CPPFLAGS += -Ithird_party/googletest/googletest/include
 CPPFLAGS += -Ithird_party/imgui
@@ -32,16 +33,16 @@ CPPFLAGS += -Ithird_party/imgui/backends
 CPPFLAGS += -Ithird_party/imgui/examples
 CPPFLAGS += -Ithird_party/imgui/misc/cpp
 CPPFLAGS += -Ithird_party/libelfin
-CPPFLAGS += -Ithird_party/llhttp
+CPPFLAGS_pkg_libllhttp += -Ithird_party/llhttp
 CPPFLAGS += -Ithird_party/luajit/src
-CPPFLAGS += -Ithird_party/luv/src
-CPPFLAGS += -Ithird_party/luv/deps/lua-compat-5.3/c-api
+CPPFLAGS_pkg_libluv += -Ithird_party/luv/src
+CPPFLAGS_pkg_libluv += -Ithird_party/luv/deps/lua-compat-5.3/c-api
 CPPFLAGS += -Ithird_party/magic_enum/include/magic_enum
-CPPFLAGS += -Ithird_party/md4c/src
-CPPFLAGS += -Ithird_party/multipart-parser-c
+CPPFLAGS_pkg_md4c += -Ithird_party/md4c/src
+CPPFLAGS_lib_multipart += -Ithird_party/multipart-parser-c
 CPPFLAGS += -Ithird_party/tracy/public
-CPPFLAGS += -Ithird_party/ucl -Ithird_party/ucl/include
-CPPFLAGS += -Ithird_party/uriparser/include
+CPPFLAGS_lib_ucl += -Ithird_party/ucl -Ithird_party/ucl/include
+CPPFLAGS_pkg_liburiparser += -Ithird_party/uriparser/include
 CPPFLAGS += -Ithird_party/zep/extensions
 CPPFLAGS += -Ithird_party/zep/include
 CPPFLAGS += -Ithird_party/xbyak/xbyak
@@ -75,7 +76,6 @@ ifeq ($(UNAME_S),Darwin)
 endif
 
 LUAJIT_LDFLAGS := $(LDFLAGS)
-LDFLAGS += `pkg-config --libs $(PACKAGES)`
 
 ifeq ($(UNAME_S),Darwin)
     LDFLAGS += -lc++ -framework GLUT -framework OpenGL -framework CoreFoundation -framework Cocoa
@@ -108,8 +108,8 @@ endif
 
 LD := $(CXX)
 
-SRCS := $(call rwildcard,src/,*.cc)
-SRCS += third_party/fmt/src/os.cc third_party/fmt/src/format.cc
+SRCS += $(call rwildcard,src/,*.cc)
+SRCS_pkg_fmt += third_party/fmt/src/os.cc third_party/fmt/src/format.cc
 IMGUI_SRCS += $(wildcard third_party/imgui/*.cpp)
 VIXL_SRCS := $(call rwildcard, third_party/vixl/src,*.cc)
 SRCS += $(IMGUI_SRCS)
@@ -129,16 +129,16 @@ SRCS += third_party/imgui/misc/freetype/imgui_freetype.cpp
 SRCS += third_party/imgui_lua_bindings/imgui_lua_bindings.cpp
 SRCS += third_party/imgui_md/imgui_md.cpp
 SRCS += third_party/imgui_memory_editor/imgui_memory_editor.cpp
-SRCS += $(wildcard third_party/llhttp/*.c)
+SRCS_pkg_libllhttp += $(wildcard third_party/llhttp/*.c)
 SRCS += $(wildcard third_party/lpeg/*.c)
 SRCS += third_party/lua-protobuf/pb.c
 SRCS += third_party/luafilesystem/src/lfs.c
-SRCS += third_party/luv/src/luv.c
-SRCS += third_party/md4c/src/md4c.c
-SRCS += third_party/multipart-parser-c/multipart_parser.c
+SRCS_pkg_libluv += third_party/luv/src/luv.c
+SRCS_pkg_md4c += third_party/md4c/src/md4c.c
+SRCS_lib_multipart += third_party/multipart-parser-c/multipart_parser.c
 SRCS += third_party/nanovg/src/nanovg.c
-SRCS += third_party/tracy/public/TracyClient.cpp
-SRCS += third_party/ucl/src/n2e_99.c third_party/ucl/src/alloc.c
+SRCS_ReleaseWithTracy += third_party/tracy/public/TracyClient.cpp
+SRCS_lib_ucl += third_party/ucl/src/n2e_99.c third_party/ucl/src/alloc.c
 SRCS += $(wildcard third_party/uriparser/src/*.c)
 SRCS += third_party/zep/extensions/repl/mode_repl.cpp
 SRCS += $(wildcard third_party/zep/src/*.cpp)
@@ -176,6 +176,37 @@ TOOLS = exe2elf exe2iso modconv ps1-packer psyq-obj-parser
 
 ##############################################################################
 
+SRCS += $(SRCS_$(BUILD))
+
+define CHECK_PKG
+ifeq ($(shell pkg-config --exists $(1) && echo true || echo false),true)
+PACKAGES += $(1)
+else
+CPPFLAGS += $(CPPFLAGS_pkg_$(1))
+LDFLAGS += $(LDFLAGS_pkg_$(1))
+SRCS += $(SRCS_pkg_$(1))
+endif
+endef
+
+define CHECK_LIB
+ifeq ($(shell echo "int main(){}" | gcc -x c - -l$(1) -Wl,--no-as-needed -Wl,--unresolved-symbols=ignore-all -Wl,--no-undefined -o /dev/null >& /dev/null && echo true || echo false),true)
+LDFLAGS += -l$(1)
+else
+CPPFLAGS += $(CPPFLAGS_lib_$(1))
+LDFLAGS += $(LDFLAGS_lib_$(1))
+SRCS += $(SRCS_lib_$(1))
+endif
+endef
+
+$(foreach pkg,$(OPTIONAL_PACKAGES),$(eval $(call CHECK_PKG,$(pkg))))
+$(foreach lib,$(OPTIONAL_LIBRARIES),$(eval $(call CHECK_LIB,$(lib))))
+
+CPPFLAGS_PKGCONFIG := $(shell pkg-config --cflags $(PACKAGES))
+LDFLAGS_PKGCONFIG := $(shell pkg-config --libs $(PACKAGES))
+
+CPPFLAGS += $(CPPFLAGS_PKGCONFIG)
+LDFLAGS += $(LDFLAGS_PKGCONFIG)
+
 OBJECTS += $(patsubst %.c,%.o,$(filter %.c,$(SRCS)))
 OBJECTS += $(patsubst %.cc,%.o,$(filter %.cc,$(SRCS)))
 OBJECTS += $(patsubst %.cpp,%.o,$(filter %.cpp,$(SRCS)))
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 000000000..a416a730e
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,48 @@
+{
+  "nodes": {
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1737420293,
+        "narHash": "sha256-F1G5ifvqTpJq7fdkT34e/Jy9VCyzd5XfJ9TO8fHhJWE=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "f4158fa080ef4503c8f4c820967d946c2af31ec9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1739020877,
+        "narHash": "sha256-mIvECo/NNdJJ/bXjNqIh8yeoSjVLAuDuTUzAo7dzs8Y=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "a79cfe0ebd24952b580b1cf08cd906354996d547",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..ff3079aeb
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,41 @@
+{
+  description = "PlayStation 1 emulator and debugger";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nix-github-actions.url = "github:nix-community/nix-github-actions";
+    nix-github-actions.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    nix-github-actions
+  }:
+  let
+    lib = nixpkgs.lib;
+    # githubSystems = builtins.attrNames nix-github-actions.lib.githubPlatforms;
+    # forAllSystems = lib.genAttrs lib.systems.flakeExposed;
+    # forGithubSystems = lib.genAttrs githubSystems;
+    # TODO: githubSystems should be supportedSystems intersects lib.githubPlatforms
+    # Some of the dependencies don't build on clang. Will fix later
+    supportedSystems = [ "x86_64-linux" "aarch64-linux" ];
+    forAllSystems = lib.genAttrs supportedSystems;
+    forGithubSystems = lib.genAttrs supportedSystems;
+  in {
+    packages = forAllSystems (system:
+      let pkgs = import nixpkgs { inherit system; };
+    in {
+      pcsx-redux = pkgs.callPackage ./pcsx-redux.nix {
+          src = self;
+          platforms = lib.systems.flakeExposed;
+      };
+      # FIXME: default gets duplicated in githubActions
+      # default = self.packages.${system}.pcsx-redux;
+    });
+
+    githubActions = nix-github-actions.lib.mkGithubMatrix {
+      checks = forGithubSystems (system: self.packages.${system});
+    };
+  };
+}
diff --git a/pcsx-redux.nix b/pcsx-redux.nix
new file mode 100644
index 000000000..cea4fb521
--- /dev/null
+++ b/pcsx-redux.nix
@@ -0,0 +1,187 @@
+{
+  stdenv,
+  lib,
+  fetchFromGitHub,
+  libuv,
+  zlib,
+  curl,
+  ffmpeg,
+  glfw3,
+  capstone,
+  freetype,
+  libX11,
+  pkg-config,
+  imagemagick,
+  luajitPackages,
+  multipart-parser-c,
+  fmt,
+  magic-enum,
+  miniaudio,
+  gtest,
+  tl-expected,
+  elfio,
+  tracy,
+  md4c,
+  stb,
+  uriparser,
+  ucl,
+  llhttp,
+
+  src,
+  debugBuild ? false,
+  platforms,
+}:
+let
+  zep = fetchFromGitHub {
+    owner = "grumpycoders";
+    repo = "zep";
+    rev = "86ea3c7019f45ccd4a13503bf7d98a396e8f0193";
+    hash = "sha256-6NmUlOHkRQvCgbATcNxnFrfA2ZWROPYN8Vpd10k6Z2g=";
+  };
+  nanosvg = fetchFromGitHub {
+    owner = "grumpycoders";
+    repo = "nanosvg";
+    rev = "f0a3e1034dd22e2e87e5db22401e44998383124e";
+    hash = "sha256-af11kAga6Ru2rPgrfcYswXNy9etvH3J9FX2T0I0++ew=";
+  };
+  nanovg = fetchFromGitHub {
+    owner = "grumpycoders";
+    repo = "nanovg";
+    rev = "7c021819bbd4843a1a3091fe47346d3fcb2a3e1a";
+    hash = "sha256-gZHbNuDkLXlLlXZZpLBHcbwzTfeBBkLY7xl4L5yr2lY=";
+  };
+  vixl = fetchFromGitHub {
+    owner = "grumpycoders";
+    repo = "vixl";
+    rev = "53ad192b26ddf6edd228a24ae1cffc363b442c01";
+    hash = "sha256-p9Z2lFzhqnHnFWfqT6BIJBVw2ZpkVIxykhG3jUHXA84=";
+  };
+  imgui-md = fetchFromGitHub {
+      owner = "mekhontsev";
+      repo = "imgui_md";
+      rev = "8ca75c5f7663f314821e3d0b2c51011792bee68f";
+      hash = "sha256-uxhY81DWLRRCceYn9khk3rwzT+2f9PNMIMT9OrkPfFc=";
+  };
+  xbyak = fetchFromGitHub {
+      owner = "herumi";
+      repo = "xbyak";
+      rev = "2fb843c3287918038c8f76276a590c25cc7ec5ee";
+      hash = "sha256-XZce+kEZ7dipI19WY43ycOjzM2dZyANMEN5+GhoNYUk=";
+  };
+  luafs = fetchFromGitHub {
+      owner = "lunarmodules";
+      repo = "luafilesystem";
+      rev = "912e06714fc276c15b4d5d1b42bd2b11edb8deff";
+      hash = "sha256-BShByo2NhVrOHDPze/JXfeFWq36PFrI2HVugR2MDB0A=";
+  };
+  luajit = fetchFromGitHub {
+      owner = "grumpycoders";
+      repo = "luajit";
+      rev = "66fadd16a51955cfbd770de62806cfbdd7c6c818";
+      hash = "sha256-nFlDr79GC8MsL6ausAsEPJwL8OJrFydB37tpD5mS1C8=";
+  };
+  imgui = fetchFromGitHub {
+      owner = "ocornut";
+      repo = "imgui";
+      rev = "368123ab06b2b573d585e52f84cd782c5c006697";
+      hash = "sha256-6VOs7a31bEfAG75SQAY2X90h/f/HvqZmN615WXYkUOA=";
+  };
+  sdl-db = fetchFromGitHub {
+      owner = "mdqinc";
+      repo = "SDL_GameControllerDB";
+      rev = "b1e342774cbb35467dfdd3634d4f0181a76cbc89";
+      hash = "sha256-LYvO+chDVo6D++fuFbxqSRltGW3y82SESmtFj39TdSA=";
+  };
+in stdenv.mkDerivation {
+  pname = "pcsx-redux";
+  version = "0.99test";
+  inherit src;
+
+  postUnpack = ''
+    rm -rf source/third_party/miniaudio
+    rm -rf source/third_party/zep
+    rm -rf source/third_party/nanosvg
+    rm -rf source/third_party/nanovg
+    rm -rf source/third_party/imgui
+    rm -rf source/third_party/imgui_md
+    rm -rf source/third_party/xbyak
+    rm -rf source/third_party/luafilesystem
+    rm -rf source/third_party/SDL_GameControllerDB
+    rm -rf source/third_party/tracy
+    rm -rf source/third_party/luajit
+
+    cp -r ${miniaudio.out} source/third_party/miniaudio
+    cp -r ${zep.out} source/third_party/zep
+    cp -r ${nanosvg.out} source/third_party/nanosvg
+    cp -r ${nanovg.out} source/third_party/nanovg
+    cp -r ${imgui.out} source/third_party/imgui
+    cp -r ${imgui-md.out} source/third_party/imgui_md
+    cp -r ${xbyak.out} source/third_party/xbyak
+    cp -r ${luafs.out} source/third_party/luafilesystem
+    cp -r ${sdl-db.out} source/third_party/SDL_GameControllerDB
+    cp -r ${tracy.src} source/third_party/tracy
+    cp -r ${luajit.out} source/third_party/luajit
+
+    chmod -R +w source/third_party/miniaudio
+    chmod -R +w source/third_party/zep
+    chmod -R +w source/third_party/nanosvg
+    chmod -R +w source/third_party/nanovg
+    chmod -R +w source/third_party/imgui
+    chmod -R +w source/third_party/imgui_md
+    chmod -R +w source/third_party/luafilesystem
+    chmod -R +w source/third_party/SDL_GameControllerDB
+    chmod -R +w source/third_party/tracy
+    chmod -R +w source/third_party/luajit
+  ''
+  + lib.optionalString stdenv.hostPlatform.isAarch ''
+    cp -r ${vixl.out} source/third_party/vixl
+    chmod -R +w source/third_party/vixl
+  '';
+
+  nativeBuildInputs = [
+    pkg-config
+    imagemagick
+  ];
+
+  buildInputs = [
+    stb
+    ucl
+    md4c
+    luajitPackages.libluv
+    multipart-parser-c
+    fmt
+    magic-enum
+    gtest
+    tl-expected
+    elfio
+    libuv
+    tracy
+    curl.dev
+    zlib
+    ffmpeg.dev
+    glfw3
+    capstone
+    freetype.dev
+    uriparser
+    libX11
+    llhttp
+  ];
+
+  makeFlags = [
+    "DESTDIR=$(out)"
+  ];
+
+  # TODO: learn how to use separate debug info
+  dontStrip = debugBuild;
+  enableDebugging = debugBuild;
+  
+  enableParallelBuilding = true;
+  NIX_BUILD_CORES = 2;
+
+  meta = {
+    homepage = "https://pcsx-redux.consoledev.net";
+    description = "PlayStation 1 emulator and debugger";
+    mainProgram = "pcsx-redux";
+    inherit platforms;
+  };
+}