unifi, nixos/unifi: support LTS (5.6.36) and release (5.7.20)

Ubiquiti has both a LTS and current version of their Unifi controller software.

The latter adds new features, but may drop support for some devices.

This adds the capability to use either for the unifi module but defaults
to the LTS version, which was the previous behavior.

1 files changed, 22 insertions, 6 deletions

diff --git a/pkgs/servers/unifi/default.nix b/pkgs/servers/unifi/default.nix
index e9d2fd07dc56..dac4bf6899a1 100644
--- a/pkgs/servers/unifi/default.nix
+++ b/pkgs/servers/unifi/default.nix
@@ -2,21 +2,37 @@
 , dpkg
 , fetchurl
 , unzip
+, useLTS ? false
 }:
 
-stdenv.mkDerivation rec {
-  name = "unifi-controller-${version}";
-  version = "5.6.36";
 
-  src = fetchurl {
+let
+  versions = {
+    stable = {
+      version = "5.7.20";
+      sha256 = "1ylj4i5mcv6z9n32275ccdf1rqk74zilqsih3r6xzhm30pxrd8dd";
+    };
+    lts = {
+      version = "5.6.36";
+      sha256 = "075q7vm56fdsjwh72y2cb1pirl2pxdkvqnhvd3bf1c2n64mvp6bi";
+    };
+  };
+  selectedVersion =
+    let attr = if useLTS then "lts" else "stable";
+    in versions."${attr}";
+in
+
+stdenv.mkDerivation {
+  name = "unifi-controller-${selectedVersion.version}";
+  src = with selectedVersion; fetchurl {
     url = "https://dl.ubnt.com/unifi/${version}/unifi_sysvinit_all.deb";
-    sha256 = "075q7vm56fdsjwh72y2cb1pirl2pxdkvqnhvd3bf1c2n64mvp6bi";
+    inherit sha256;
   };
 
   buildInputs = [ dpkg ];
 
   unpackPhase = ''
-    dpkg-deb -x ${src} ./
+    dpkg-deb -x $src ./
   '';
 
   doConfigure = false;