diff --git a/artiq/windows/default.nix b/artiq/windows/default.nix
index 7d2b66a..ff14798 100644
--- a/artiq/windows/default.nix
+++ b/artiq/windows/default.nix
@@ -2,11 +2,7 @@
   diskImage ? "/opt/windows/c.img",
   qemuMem ? "2G",
   testTimeout ? 120,
-  # This artiqPkg should be a current build passed by the caller
-  artiqPkg ? (pkgs.fetchurl {
-    url = "https://nixbld.m-labs.hk/build/2316/download/1/artiq-5e.b8e2b82a-0.tar.bz2";
-    sha256 = "0gisv3a17rnwavsifpz4cfnqvlssv37pysi2qx41k67rmcpqcs98";
-  }),
+  artiq ? import ./.. { inherit pkgs; },
 }:
 
 with pkgs;
@@ -40,40 +36,50 @@ let
       scp -P 2022 ${sshOpts} \
       "${src}" "${sshUser}@localhost:${target}"
   '';
-  installCondaPkgs = condaPkgs:
-    builtins.concatStringsSep "\n" (map (pkg: ''
-      F="$(basename ${pkg})"
-      ${scp pkg "$F"}
-      ${ssh "miniconda\\Scripts\\conda install $F"}
-      ${ssh "del $F"}
-    '') condaPkgs);
+  installCondaPkg = pkg: ''
+    F="$(basename ${pkg})"
+    ${scp pkg "$F"}
+    ${ssh "miniconda\\Scripts\\conda install $F"}
+    ${ssh "del $F"}
+  '';
+  makeTest = name: artiqPkg:
+    stdenv.mkDerivation {
+      name = "windows-test-${name}";
+      src = ./.;
+      buildInputs = [ qemu sshpass openssh ];
+      buildPhase = ''
+        # +1 day from last modification of the disk image
+        CLOCK=$(date -Is -d @$(expr $(stat -c %Y ${diskImage}) + 86400))
+        ${runQemu [
+          "-boot" "order=c"
+          "-snapshot"
+          "-drive" "file=${diskImage},index=0,media=disk,cache=unsafe"
+          "-rtc" "base=$CLOCK"
+        ]} &
+        echo "Wait for Windows to boot"
+        sleep 10
+        ${ssh "ver"}
+        for pkg in ${artiqPkg}/noarch/*.tar.bz2 ; do
+          ${installCondaPkg "$pkg"}
+        done
+        # Allow tests to run for 2 minutes
+        ${ssh "shutdown -s -t ${toString testTimeout}"}
+        ${ssh "miniconda\\scripts\\activate && miniconda\\python -m unittest discover -v artiq.test"}
+        # Abort timeouted shutdown
+        ${ssh "shutdown -a"}
+        # Power off immediately
+        ${ssh "shutdown -p -f"}
+      '';
+      installPhase = ''
+        echo Done
+      '';
+    };
+  condaPackageNames =
+    builtins.filter (name: builtins.match "conda-.+" name != null)
+    (builtins.attrNames artiq);
 in
-stdenv.mkDerivation {
-  name = "windows-test";
-  src = ./.;
-  buildInputs = [ qemu sshpass openssh ];
-  buildPhase = ''
-    # +1 day from last modification of the disk image
-    CLOCK=$(date -Is -d @$(expr $(stat -c %Y ${diskImage}) + 86400))
-    ${runQemu [
-      "-boot" "order=c"
-      "-snapshot"
-      "-drive" "file=${diskImage},index=0,media=disk,cache=unsafe"
-      "-rtc" "base=$CLOCK"
-    ]} &
-    echo "Wait for Windows to boot"
-    sleep 10
-    ${ssh "ver"}
-    ${installCondaPkgs [artiqPkg]}
-    # Allow tests to run for 2 minutes
-    ${ssh "shutdown -s -t $ {toString testTimeout}"}
-    ${ssh "miniconda\\scripts\\activate && miniconda\\python -m unittest discover -v artiq.test"}
-    # Abort timeouted shutdown
-    ${ssh "shutdown -a"}
-    # Power off immediately
-    ${ssh "shutdown -p -f"}
-  '';
-  installPhase = ''
-    echo Done
-  '';
-}
+  builtins.listToAttrs
+  (map (pkgName: {
+    name = pkgName;
+    value = makeTest pkgName artiq.${pkgName};
+  }) condaPackageNames)