diff --git a/artiq-fast/wfvm/install.nix b/artiq-fast/wfvm/install.nix
deleted file mode 100644
index 9d406f0..0000000
--- a/artiq-fast/wfvm/install.nix
+++ /dev/null
@@ -1,99 +0,0 @@
-{ pkgs ? import <nixpkgs> {}
-, diskImageSize ? "22G"
-, qemuMem ? "4G"
-,
-}:
-
-with pkgs;
-
-let
-  windowsIso = fetchurl {
-    url = "https://software-download.microsoft.com/download/sg/17763.107.101029-1455.rs5_release_svc_refresh_CLIENT_LTSC_EVAL_x64FRE_en-us.iso";
-    sha256 = "668fe1af70c2f7416328aee3a0bb066b12dc6bbd2576f40f812b95741e18bc3a";
-  };
-  anaconda = fetchurl {
-    url = "https://repo.anaconda.com/archive/Anaconda3-2019.03-Windows-x86_64.exe";
-    sha256 = "1f9icm5rwab6l1f23a70dw0qixzrl62wbglimip82h4zhxlh3jfj";
-  };
-
-  escape = builtins.replaceStrings [ "\\" ] [ "\\\\" ];
-  qemu = import ./qemu.nix {
-    inherit pkgs qemuMem;
-    diskImage = "c.img";
-  };
-  # Double-escape because we produce a script from a shell heredoc
-  ssh = cmd: qemu.ssh (escape cmd);
-  scp = qemu.scp;
-
-  sshCondaEnv = cmd: ssh "anaconda\\scripts\\activate && ${cmd}";
-  condaEnv = "artiq-env";
-  condaDepSpecs =
-    builtins.concatStringsSep " "
-      (
-        map (s: "\"${s}\"")
-          (import ../conda-artiq-deps.nix)
-      );
-
-  instructions =
-    builtins.toFile "install.txt"
-      (builtins.readFile ./install.txt);
-in
-stdenv.mkDerivation {
-  name = "windows-installer";
-  src = windowsIso;
-  setSourceRoot = "sourceRoot=`pwd`";
-  unpackCmd = ''
-    ln -s $curSrc windows.iso
-  '';
-  propagatedBuildInputs = qemu.inputs;
-  dontBuild = true;
-  installPhase = ''
-    mkdir -p $out/bin $out/data
-    ln -s $(readlink windows.iso) $out/data/windows.iso
-    cat > $out/bin/windows-installer.sh << EOF
-    #!/usr/bin/env bash
-    set -e -m
-
-    ${qemu.qemu-img} create -f qcow2 c.img ${diskImageSize}
-    ${qemu.runQemu false [] [
-    "-boot"
-    "order=d"
-    "-drive"
-    "file=c.img,index=0,media=disk,cache=unsafe"
-    "-drive"
-    "file=$out/data/windows.iso,index=1,media=cdrom,cache=unsafe"
-  ]} &
-    cat ${instructions}
-    wait
-    EOF
-
-    cat > $out/bin/anaconda-installer.sh << EOF
-    #!/usr/bin/env bash
-    set -e -m
-
-    ${qemu.runQemu false [] [
-    "-boot"
-    "order=c"
-    "-drive"
-    "file=c.img,index=0,media=disk"
-  ]} &
-    sleep 10
-    ${ssh "ver"}
-
-    ${scp anaconda "Anaconda.exe"}
-    ${ssh "start /wait \"\" Anaconda.exe /S /D=%cd%\\anaconda"}
-
-    ${sshCondaEnv "conda config --add channels conda-forge"}
-    ${sshCondaEnv "conda config --add channels m-labs"}
-    ( ${sshCondaEnv "conda update -y conda"} ) || true
-    ${sshCondaEnv "conda update -y --all"}
-    ${sshCondaEnv "conda create -y -n ${condaEnv}"}
-    ${sshCondaEnv "conda install -y -n ${condaEnv} ${condaDepSpecs}"}
-    ${ssh "shutdown /p /f"}
-
-    echo "Waiting for qemu exit"
-    wait
-    EOF
-    chmod a+x $out/bin/*.sh
-  '';
-}