diff --git a/zynq.nix b/artiq-zynq.nix
similarity index 82%
rename from zynq.nix
rename to artiq-zynq.nix
index 65c83d3..b156191 100644
--- a/zynq.nix
+++ b/artiq-zynq.nix
@@ -1,12 +1,9 @@
 let
   pkgs = import <nixpkgs> {};
-  zynq-rs-latest = import <zynq-rs>;
   artiq-zynq = import <artiq-zynq>;
   artiq-fast = import <artiq-fast> { inherit pkgs; };
 in
   (
-    builtins.mapAttrs (key: value: pkgs.lib.hydraJob value) zynq-rs-latest
-  ) // (
     builtins.mapAttrs (key: value: pkgs.lib.hydraJob value) artiq-zynq
   ) // {
     gateware-sim = pkgs.lib.hydraJob (pkgs.stdenv.mkDerivation {
@@ -32,7 +29,12 @@ in
       ];
       phases = [ "buildPhase" ];
 
-      buildPhase =
+      let
+        zynq-rs = import artiq-zynq.zynq-rs;
+        # New zynq-rs versions with Kasli-SoC support have the multiboard "szl" package.
+        # Older versions need the SZL environment variable set to the SZL ELF to be loaded.
+        szlEnv = if zynq-rs ? "szl" then "${zynq-rs.szl}" else "${zynq-rs.zc706-szl}/szl.elf";
+      in buildPhase =
         ''
         echo Power cycling board...
         (echo b; sleep 5; echo B; sleep 5) | nc -N -w6 192.168.1.31 3131
@@ -40,7 +42,7 @@ in
 
         export USER=hydra
         export OPENOCD_ZYNQ=${artiq-zynq.zynq-rs}/openocd
-        export SZL=${(import artiq-zynq.zynq-rs).szl}
+        export SZL=${szlEnv}
         pushd ${<artiq-zynq>}
         bash ${<artiq-zynq>}/remote_run.sh -h rpi-4 -o "-F /dev/null -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -i /opt/hydra_id_rsa" -d ${artiq-zynq.zc706-nist_qc2-jtag}
         popd
diff --git a/hydra/artiq.json b/hydra/artiq.json
index 84ff84b..73c1aa3 100644
--- a/hydra/artiq.json
+++ b/hydra/artiq.json
@@ -165,12 +165,12 @@
         }
     },
 
-    "zynq": {
+    "zynq-rs": {
         "enabled": 1,
         "hidden": false,
-        "description": "ARTIQ on Zynq",
+        "description": "Bare-metal Rust on Zynq-7000",
         "nixexprinput": "nixScripts",
-        "nixexprpath": "zynq.nix",
+        "nixexprpath": "zynq-rs.nix",
         "checkinterval": 300,
         "schedulingshares": 1,
         "enableemail": false,
@@ -179,10 +179,52 @@
         "inputs": {
             "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-21.05", "emailresponsible": false },
             "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
-            "artiq-fast": { "type": "sysbuild", "value": "artiq:fast:generated-nix", "emailresponsible": false },
             "zynq-rs": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/zynq-rs.git", "emailresponsible": false },
+
+            "gitea_repo_name": { "value": "zynq-rs", "type": "string" },
+            "gitea_repo_owner": { "value": "M-Labs", "type": "string" },
+            "gitea_status_repo": { "value": "zynq-rs", "type": "string" }
+        }
+    },
+    "zynq-beta": {
+        "enabled": 1,
+        "hidden": false,
+        "description": "ARTIQ on Zynq-7000 (beta version)",
+        "nixexprinput": "nixScripts",
+        "nixexprpath": "artiq-zynq.nix",
+        "checkinterval": 300,
+        "schedulingshares": 1,
+        "enableemail": false,
+        "emailoverride": "",
+        "keepnr": 10,
+        "inputs": {
+            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-21.05", "emailresponsible": false },
+            "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
+            "artiq-fast": { "type": "sysbuild", "value": "artiq:fast-beta:generated-nix", "emailresponsible": false },
             "artiq-zynq": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/artiq-zynq.git", "emailresponsible": false },
 
+            "gitea_repo_name": { "value": "artiq-zynq", "type": "string" },
+            "gitea_repo_owner": { "value": "M-Labs", "type": "string" },
+            "gitea_status_repo": { "value": "artiq-zynq", "type": "string" }
+        }
+    },
+    "zynq": {
+        "enabled": 1,
+        "hidden": false,
+        "description": "ARTIQ on Zynq-7000",
+        "nixexprinput": "nixScripts",
+        "nixexprpath": "artiq-zynq.nix",
+        "checkinterval": 300,
+        "schedulingshares": 1,
+        "enableemail": false,
+        "emailoverride": "",
+        "keepnr": 10,
+        "inputs": {
+            "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs nixos-20.09", "emailresponsible": false },
+            "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
+            "artiq-fast": { "type": "sysbuild", "value": "artiq:fast:generated-nix", "emailresponsible": false },
+            "artiq-zynq": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/artiq-zynq.git release-6", "emailresponsible": false },
+
             "gitea_repo_name": { "value": "artiq-zynq", "type": "string" },
             "gitea_repo_owner": { "value": "M-Labs", "type": "string" },
             "gitea_status_repo": { "value": "artiq-zynq", "type": "string" }
diff --git a/zynq-rs.nix b/zynq-rs.nix
new file mode 100644
index 0000000..47ac60f
--- /dev/null
+++ b/zynq-rs.nix
@@ -0,0 +1,7 @@
+let
+  pkgs = import <nixpkgs> {};
+  zynq-rs = import <zynq-rs>;
+in
+  (
+    builtins.mapAttrs (key: value: pkgs.lib.hydraJob value) zynq-rs
+  )