diff --git a/pkgs_pr/rmlint.nix b/pkgs_pr/rmlint.nix
new file mode 100644
index 0000000..b25929a
--- /dev/null
+++ b/pkgs_pr/rmlint.nix
@@ -0,0 +1,108 @@
+{
+  lib,
+  stdenv,
+  cairo,
+  elfutils,
+  fetchFromGitHub,
+  fetchpatch,
+  glib,
+  gobject-introspection,
+  gtksourceview3,
+  json-glib,
+  makeWrapper,
+  pango,
+  pkg-config,
+  polkit,
+  python3,
+  scons,
+  sphinx,
+  util-linux,
+  wrapGAppsHook3,
+  withGui ? false,
+}:
+
+assert withGui -> !stdenv.hostPlatform.isDarwin;
+
+stdenv.mkDerivation rec {
+  pname = "rmlint";
+  version = "2.10.2";
+
+  src = fetchFromGitHub {
+    owner = "sahib";
+    repo = "rmlint";
+    rev = "v${version}";
+    sha256 = "sha256-pOo1YfeqHUU6xyBRFbcj2lX1MHJ+a5Hi31BMC1nYZGo=";
+  };
+
+  patches = [
+    # pass through NIX_* environment variables to scons.
+    ./rmlint/scons-nix-env.patch
+    # fix #664
+    (fetchpatch {
+      url = "https://github.com/sahib/rmlint/commit/f0ca57ec907f7199e3670038d60b4702d1e1d8e2.patch";
+      hash = "sha256-715X+R2BcQIaUV76hoO+EXPfNheOfw4OIHsqSoruIUI=";
+    })
+  ];
+
+  nativeBuildInputs =
+    [
+      pkg-config
+      sphinx
+      scons
+    ]
+    ++ lib.optionals withGui [
+      makeWrapper
+      wrapGAppsHook3
+      gobject-introspection
+    ];
+
+  buildInputs =
+    [
+      glib
+      json-glib
+      util-linux
+    ]
+    ++ lib.optionals withGui [
+      cairo
+      gtksourceview3
+      pango
+      polkit
+      python3
+      python3.pkgs.pygobject3
+    ]
+    ++ lib.optionals (lib.meta.availableOn stdenv.hostPlatform elfutils) [
+      elfutils
+    ];
+
+  prePatch = ''
+    # remove sources of nondeterminism
+    substituteInPlace lib/cmdline.c \
+      --replace "__DATE__" "\"Jan  1 1970\"" \
+      --replace "__TIME__" "\"00:00:00\""
+    substituteInPlace docs/SConscript \
+      --replace "gzip -c " "gzip -cn "
+  '';
+
+  # Otherwise tries to access /usr.
+  prefixKey = "--prefix=";
+
+  sconsFlags = lib.optionals (!withGui) [ "--without-gui" ];
+
+  # in GUI mode, this shells out to itself, and tries to import python modules
+  postInstall = lib.optionalString withGui ''
+    gappsWrapperArgs+=(--prefix PATH : "$out/bin")
+    gappsWrapperArgs+=(--prefix PYTHONPATH : "$(toPythonPath $out):$(toPythonPath ${python3.pkgs.pygobject3}):$(toPythonPath ${python3.pkgs.pycairo})")
+  '';
+
+  meta = with lib; {
+    description = "Extremely fast tool to remove duplicates and other lint from your filesystem";
+    homepage = "https://rmlint.readthedocs.org";
+    platforms = platforms.unix;
+    license = licenses.gpl3;
+    maintainers = with maintainers; [
+      aaschmid
+      koral
+    ];
+    mainProgram = "rmlint";
+  };
+}
diff --git a/pkgs_pr/rmlint/scons-nix-env.patch b/pkgs_pr/rmlint/scons-nix-env.patch
new file mode 100644
index 0000000..10ed569
--- /dev/null
+++ b/pkgs_pr/rmlint/scons-nix-env.patch
@@ -0,0 +1,19 @@
+scons does not use os environment by default:
+  https://scons.org/doc/2.1.0/HTML/scons-user/x1750.html
+
+nixpkgs' cc-wrapper on the other hand relies on various NIX_* variables
+to be passed through like NIX_CFLAGS_COMPILE_BEFORE.
+--- a/SConstruct
++++ b/SConstruct
+@@ -559,10 +559,7 @@ options = dict(
+     SHLINKCOMSTR=link_shared_library_message,
+     LINKCOMSTR=link_program_message,
+     PREFIX=GetOption('prefix'),
+-    ENV = dict([ (key, os.environ[key])
+-                 for key in os.environ
+-                 if key in ['PATH', 'TERM', 'HOME', 'PKG_CONFIG_PATH']
+-              ])
++    ENV = os.environ,
+ )
+ 
+ if ARGUMENTS.get('VERBOSE') == "1":