diff --git a/pkgs/development/python-modules/cson/default.nix b/pkgs/development/python-modules/cson/default.nix
new file mode 100644
index 000000000000..c05ad78240c0
--- /dev/null
+++ b/pkgs/development/python-modules/cson/default.nix
@@ -0,0 +1,26 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, speg
+}:
+
+buildPythonPackage rec {
+  pname = "cson";
+  version = "0.8";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-7owBZvzR9ReJiHGX4+g1Sse++jlvwpcGvOta8l7cngE=";
+  };
+
+  propagatedBuildInputs = [ speg ];
+
+  pythonImportChecks = [ "cson" ];
+
+  meta = with lib; {
+    description = "A python parser for the Coffeescript Object Notation (CSON)";
+    homepage = "https://github.com/avakar/pycson";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ xworld21 ];
+  };
+}
diff --git a/pkgs/development/python-modules/speg/default.nix b/pkgs/development/python-modules/speg/default.nix
new file mode 100644
index 000000000000..83bdc1e5b046
--- /dev/null
+++ b/pkgs/development/python-modules/speg/default.nix
@@ -0,0 +1,28 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, speg
+}:
+
+buildPythonPackage rec {
+  pname = "speg";
+  version = "0.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-EMvvR+Fo38YvFNtXXPHEKAN6K4gc7mw8/O2gQ5wkPnE=";
+    extension = "zip";
+  };
+
+  pythonImportChecks = [ "speg" ];
+
+  # checks fail for seemingly spurious reasons
+  doCheck = false;
+
+  meta = with lib; {
+    description = "A PEG-based parser interpreter with memoization (in time)";
+    homepage = "https://github.com/avakar/speg";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ xworld21 ];
+  };
+}
diff --git a/pkgs/tools/graphics/asymptote/default.nix b/pkgs/tools/graphics/asymptote/default.nix
index 9950d3c56f99..795378d370c2 100644
--- a/pkgs/tools/graphics/asymptote/default.nix
+++ b/pkgs/tools/graphics/asymptote/default.nix
@@ -1,8 +1,8 @@
 { lib, stdenv, fetchFromGitHub, fetchurl, fetchpatch
-, autoreconfHook, bison, glm, flex
+, autoreconfHook, bison, glm, flex, wrapQtAppsHook, cmake
 , freeglut, ghostscriptX, imagemagick, fftw
 , boehmgc, libGLU, libGL, mesa, ncurses, readline, gsl, libsigsegv
-, python3Packages
+, python3, qtbase, qtsvg, boost
 , zlib, perl, curl
 , texLive, texinfo
 , darwin
@@ -25,17 +25,17 @@ stdenv.mkDerivation rec {
     flex
     bison
     texinfo
+    wrapQtAppsHook
+    cmake
   ];
 
   buildInputs = [
     ghostscriptX imagemagick fftw
     boehmgc ncurses readline gsl libsigsegv
-    zlib perl curl
+    zlib perl curl qtbase qtsvg boost
     texLive
-  ] ++ (with python3Packages; [
-    python
-    pyqt5
-  ]);
+    (python3.withPackages (ps: with ps; [ cson numpy pyqt5 ]))
+  ];
 
   propagatedBuildInputs = [
     glm
@@ -45,6 +45,8 @@ stdenv.mkDerivation rec {
     OpenGL GLUT Cocoa
   ]);
 
+  dontWrapQtApps = true;
+
   preConfigure = ''
     HOME=$TMP
   '';
@@ -57,6 +59,9 @@ stdenv.mkDerivation rec {
   env.NIX_CFLAGS_COMPILE = "-I${boehmgc.dev}/include/gc";
 
   postInstall = ''
+    rm "$out"/bin/xasy
+    makeQtWrapper "$out"/share/asymptote/GUI/xasy.py "$out"/bin/xasy --prefix PATH : "$out"/bin
+
     mv $out/share/info/asymptote/*.info $out/share/info/
     sed -i -e 's|(asymptote/asymptote)|(asymptote)|' $out/share/info/asymptote.info
     rmdir $out/share/info/asymptote
@@ -66,6 +71,8 @@ stdenv.mkDerivation rec {
     install -Dt $out/share/emacs/site-lisp/${pname} $out/share/asymptote/*.el
   '';
 
+  dontUseCmakeConfigure = true;
+
   enableParallelBuilding = true;
   # Missing install depends:
   #   ...-coreutils-9.1/bin/install: cannot stat 'asy-keywords.el': No such file or directory
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index b3671c653ef6..0cae1ec5ec64 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3030,7 +3030,7 @@ with pkgs;
 
   astc-encoder = callPackage ../tools/graphics/astc-encoder { };
 
-  asymptote = callPackage ../tools/graphics/asymptote {
+  asymptote = libsForQt5.callPackage ../tools/graphics/asymptote {
     texLive = texlive.combine { inherit (texlive) scheme-small epsf cm-super texinfo media9 ocgx2 collection-latexextra; };
   };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 54d95ea5beb9..3e2540841e3d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2211,6 +2211,8 @@ self: super: with self; {
 
   crytic-compile = callPackage ../development/python-modules/crytic-compile { };
 
+  cson  = callPackage ../development/python-modules/cson { };
+
   csrmesh  = callPackage ../development/python-modules/csrmesh { };
 
   csscompressor = callPackage ../development/python-modules/csscompressor { };
@@ -11540,6 +11542,8 @@ self: super: with self; {
 
   speedtest-cli = callPackage ../development/python-modules/speedtest-cli { };
 
+  speg = callPackage ../development/python-modules/speg { };
+
   spglib = callPackage ../development/python-modules/spglib { };
 
   sphfile = callPackage ../development/python-modules/sphfile { };