diff --git a/artiq-fast/wfvm/build.nix b/artiq-fast/wfvm/build.nix
index 7309116..c764b48 100644
--- a/artiq-fast/wfvm/build.nix
+++ b/artiq-fast/wfvm/build.nix
@@ -85,6 +85,27 @@ win.makeWindowsImage {
         echo MSYS2 installer finished
       '';
     }
+    {
+      name = "MSYS2-with-packages";
+      script = let
+        msys-packages = import ./msys_packages.nix { inherit pkgs; };
+        msys-packages-put = pkgs.lib.strings.concatStringsSep "\n"
+            (map (package: ''win-put ${package} 'C:\Users\artiq\msyspackages' '') msys-packages);
+      in
+        # Windows command line is so shitty it can't even do glob expansion. Why do people use Windows?
+        ''
+        win-exec 'mkdir msyspackages'
+        ${msys-packages-put}
+        cat > installmsyspackages.bat << EOF
+        set MSYS=c:\msys64
+        set ARCH=64
+        set PATH=%MSYS%\usr\bin;%MSYS%\mingw%ARCH%\bin;%PATH%
+        bash -c "pacman -U --noconfirm C:/Users/artiq/msyspackages/*"
+        EOF
+        win-put installmsyspackages.bat 'C:\Users\artiq'
+        win-exec installmsyspackages
+        '';
+    }
 
   ];
 
diff --git a/artiq-fast/wfvm/make_msys_packages.sh b/artiq-fast/wfvm/make_msys_packages.sh
new file mode 100755
index 0000000..5cdb3b7
--- /dev/null
+++ b/artiq-fast/wfvm/make_msys_packages.sh
@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# Obtain the list with e.g. pacman -Sp %TOOLPREF%gcc %TOOLPREF%binutils make autoconf automake libtool texinfo
+
+read -r -d '' packages << EOM
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-libiconv-1.16-1-any.pkg.tar.xz 
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-zlib-1.2.11-7-any.pkg.tar.xz
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-binutils-2.34-3-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-headers-git-8.0.0.5905.066f1b3c-1-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-crt-git-8.0.0.5905.066f1b3c-1-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-isl-0.22.1-1-any.pkg.tar.xz
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-gmp-6.2.0-1-any.pkg.tar.xz
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-mpfr-4.0.2-2-any.pkg.tar.xz
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-mpc-1.1.0-1-any.pkg.tar.xz
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-libwinpthread-git-8.0.0.5906.c9a21571-1-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-gcc-libs-10.1.0-3-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-windows-default-manifest-6.4-3-any.pkg.tar.xz
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-winpthreads-git-8.0.0.5906.c9a21571-1-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-zstd-1.4.5-1-any.pkg.tar.zst
+http://repo.msys2.org/mingw/i686/mingw-w64-i686-gcc-10.1.0-3-any.pkg.tar.zst
+http://repo.msys2.org/msys/x86_64/make-4.3-1-x86_64.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/m4-1.4.18-2-x86_64.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/diffutils-3.7-1-x86_64.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/autoconf-2.69-5-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.6-1.6.3-2-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.7-1.7.9-2-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.8-1.8.5-3-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.9-1.9.6-2-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.10-1.10.3-3-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.11-1.11.6-3-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.12-1.12.6-3-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.13-1.13.4-4-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.14-1.14.1-3-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.15-1.15.1-1-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake1.16-1.16.1-1-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/automake-wrapper-11-1-any.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/libltdl-2.4.6-9-x86_64.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/tar-1.32-1-x86_64.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/libtool-2.4.6-9-x86_64.pkg.tar.xz
+http://repo.msys2.org/msys/x86_64/texinfo-6.7-1-x86_64.pkg.tar.xz
+EOM
+
+echo "{ pkgs } : ["
+for package in $packages; do
+	hash=$(nix-prefetch-url $package)
+	echo "
+(pkgs.fetchurl {
+  url = \"$package\";
+  sha256 = \"$hash\";
+})"
+done
+echo "]"
diff --git a/artiq-fast/wfvm/msys_packages.nix b/artiq-fast/wfvm/msys_packages.nix
new file mode 100644
index 0000000..e9f81f1
--- /dev/null
+++ b/artiq-fast/wfvm/msys_packages.nix
@@ -0,0 +1,177 @@
+{ pkgs } : [
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-libiconv-1.16-1-any.pkg.tar.xz";
+  sha256 = "0d53xqbd6r53pyfkhrdjh88fwkiq3xkcl9nxp3sfh5pib589vmxv";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-zlib-1.2.11-7-any.pkg.tar.xz";
+  sha256 = "0hjswm6b9nzmqkjb8v18787l6r2vzi7dzjzi81v409s02d96rpxd";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-binutils-2.34-3-any.pkg.tar.zst";
+  sha256 = "0wp6yhylpdb6hw5xvqjj5bsyyllanhdqsya3vq17sc7pk7h246rc";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-headers-git-8.0.0.5905.066f1b3c-1-any.pkg.tar.zst";
+  sha256 = "14bpm8lvkpfk9xk4xynqcgr7f5s8hfqplq2bd4alvl4pr05yrf8j";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-crt-git-8.0.0.5905.066f1b3c-1-any.pkg.tar.zst";
+  sha256 = "0brg5m9xp019b7p44ijcl5khmqk9hagf7lf9jz1vwjj8y5lpyhrb";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-isl-0.22.1-1-any.pkg.tar.xz";
+  sha256 = "1685993h14iyj155cbamvncjv2gdkvdhmbm138sy6i7cd8q7avvy";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-gmp-6.2.0-1-any.pkg.tar.xz";
+  sha256 = "00dps8wmrr3gnk17ndi5v20722fp8knyqbqkpvlmyw4fxlx7ix1v";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-mpfr-4.0.2-2-any.pkg.tar.xz";
+  sha256 = "0vhl8prvd2kh9mfdrmaijadx7nk70pzqy9rqj5hxqpskbsffv9bv";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-mpc-1.1.0-1-any.pkg.tar.xz";
+  sha256 = "11523nvs28jzmrxfrfs352ybp7zpm834ak293hnk8g8fh9v056jr";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-libwinpthread-git-8.0.0.5906.c9a21571-1-any.pkg.tar.zst";
+  sha256 = "0349g5yy656bx94w1kajck03lgl85pcy3hwh2akql1062gi5ycgs";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-gcc-libs-10.1.0-3-any.pkg.tar.zst";
+  sha256 = "13sndq497a2bgmc1dxlanwnvh0w6mdb83qb13szfjpy6y6qn13an";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-windows-default-manifest-6.4-3-any.pkg.tar.xz";
+  sha256 = "10xrlsv1p5fm0q0dlzhdzip3kf15m959rh0mg5rgzq3xkk1kncjn";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-winpthreads-git-8.0.0.5906.c9a21571-1-any.pkg.tar.zst";
+  sha256 = "058jipgsf7v5r3q49icl6yijl539k3brhm5nrc812baa1pq83v2f";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-zstd-1.4.5-1-any.pkg.tar.zst";
+  sha256 = "151fi9iijf6vf53pq5vs970wsf7hlmrplz025fmc94ck22c6aza8";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/mingw/i686/mingw-w64-i686-gcc-10.1.0-3-any.pkg.tar.zst";
+  sha256 = "1gx2q2lr44bpa1ixx5bv57jzhvf9a8y3rbz7njk1z63jp0ylgsr9";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/make-4.3-1-x86_64.pkg.tar.xz";
+  sha256 = "0bmgggw56gkx7dcd8simpi2lhgz98limikx8wm0cb8cn7awi9w82";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/m4-1.4.18-2-x86_64.pkg.tar.xz";
+  sha256 = "05x7myqwwxk3vfqmliwk5pfn0w04fnjh1sqafsynpb9hx0c563ji";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/diffutils-3.7-1-x86_64.pkg.tar.xz";
+  sha256 = "11qdxn4mr8a96palhp5jkam904fh77bsw5v7mslhnzag4cg3kybx";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/autoconf-2.69-5-any.pkg.tar.xz";
+  sha256 = "1fxvgbjnmmb7dvmssfxkiw151dfd1wzj04hf45zklmzs4h2kkwda";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.6-1.6.3-2-any.pkg.tar.xz";
+  sha256 = "0if4wrr1vm2f1zjjh6dpln97xc1l1052bcawzmndwfh561cfxqb6";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.7-1.7.9-2-any.pkg.tar.xz";
+  sha256 = "1mjhp1k4c0xm8hfm3yckqvfb4ablzgg8a87l7wxaq1mmmskjmhpq";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.8-1.8.5-3-any.pkg.tar.xz";
+  sha256 = "046bzr44ss0lglx9lzccj9li74arz632hyvz6l9fcp98dndr3qjk";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.9-1.9.6-2-any.pkg.tar.xz";
+  sha256 = "0bh0dldmrd46xhix5358nj9sgf298n4ap0y8dsl6rvjsb5c0l5hd";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.10-1.10.3-3-any.pkg.tar.xz";
+  sha256 = "0p26lkx5n1mmmw1y98bgwzbxfxkfa18fqxvkgsm60fznjig4dq61";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.11-1.11.6-3-any.pkg.tar.xz";
+  sha256 = "1cjkav2bskf9rdm8g3hsl2l7wz1lx8dfigwqib0xhm7n8i8gc560";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.12-1.12.6-3-any.pkg.tar.xz";
+  sha256 = "1c0h2lngfjjfvw0jkrfah1fs25k0vdm80hlxfjs912almh2yg5gv";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.13-1.13.4-4-any.pkg.tar.xz";
+  sha256 = "0mczn8hanqn3hxr104klb832b4cnzn44bbn7lvqfsbvvjpklv9ld";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.14-1.14.1-3-any.pkg.tar.xz";
+  sha256 = "04gjyfszyphxy7qc1rr8378ms9hql0sy8a1gyj0mvpbmgb0phgkp";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.15-1.15.1-1-any.pkg.tar.xz";
+  sha256 = "00n1f3c6fwznpm1f6xmj30q41ixw5vdg52yg48yvr4jswb78qf8q";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake1.16-1.16.1-1-any.pkg.tar.xz";
+  sha256 = "1ds8rpagrlkzi28n5rh0jcibbic49xssl2hz6sy41my0vd8a3z9y";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/automake-wrapper-11-1-any.pkg.tar.xz";
+  sha256 = "1dzymv59wri7qqmgmy5xfkq6zvfcb0znwspc149a04d0bhxs75gw";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/libltdl-2.4.6-9-x86_64.pkg.tar.xz";
+  sha256 = "0j0xazjpj28dib9vjn3paibhry77k903rzvbkdn6gnl20smj18g2";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/tar-1.32-1-x86_64.pkg.tar.xz";
+  sha256 = "0ynz2qwzbcmixcxddp05q2wc7iqli6svzkrjss9izrpmbkv5ifa5";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/libtool-2.4.6-9-x86_64.pkg.tar.xz";
+  sha256 = "0mrnkayrhmrgq446nyysvj3kadqm1xhyl97qqv6hrq57lhkcry2p";
+})
+
+(pkgs.fetchurl {
+  url = "http://repo.msys2.org/msys/x86_64/texinfo-6.7-1-x86_64.pkg.tar.xz";
+  sha256 = "0c50809yg9g95m8yib867q8m28sjabqppz2qbzh3gr83z55kknnw";
+})
+]