add EPICS module support 'busy'

pkgs/default.nix

@@ -27,6 +27,7 @@ in
       support = recurseExtensible (_self: {
         asyn = callPackage ./epnix/support/asyn {};
         autosave = callPackage ./epnix/support/autosave {};
+        busy = callPackage ./epnix/support/busy {};
         calc = callPackage ./epnix/support/calc {};
         devlib2 = callPackage ./epnix/support/devlib2 {};
         epics-systemd = callPackage ./epnix/support/epics-systemd {};

pkgs/epnix/support/busy/default.nix

@@ -0,0 +1,33 @@
+{
+  epnixLib,
+  mkEpicsPackage,
+  fetchFromGitHub,
+  epnix,
+  local_config_site ? {},
+  local_release ? {},
+}:
+mkEpicsPackage rec {
+  pname = "busy";
+  version = "1-7-4";
+  varname = "BUSY";
+
+  inherit local_config_site local_release;
+
+  src = fetchFromGitHub {
+    owner = "epics-modules";
+    repo = "busy";
+    rev = "R${version}";
+    sha256 = "sha256-mSzFLj42iXkyWGWaxplfLehoQcULLpf745trYMd1XT4=";
+  };
+
+  patches = [./fix-release.patch];
+
+  buildInputs = with epnix.support; [calc asyn autosave];
+
+  meta = {
+    description = "APS BCDA synApps module: busy";
+    homepage = "https://epics.anl.gov/bcda/synApps/busy/busy.html";
+    license = epnixLib.licenses.epics;
+    maintainers = with epnixLib.maintainers; [agaget];
+  };
+}

pkgs/epnix/support/busy/fix-release.patch

@@ -0,0 +1,13 @@
+diff --git a/configure/RELEASE b/configure/RELEASE
+index 4d24f2c..61a1d60 100644
+--- a/configure/RELEASE
++++ b/configure/RELEASE
+@@ -13,7 +13,7 @@ ASYN=$(SUPPORT)/asyn-4-33
+ AUTOSAVE=$(SUPPORT)/autosave-5-9
+
+ # BUSY is this module
+-BUSY=$(SUPPORT)/busy-1-7
++# BUSY=$(SUPPORT)/busy-1-7
+
+ # EPICS_BASE usually appears last so other apps can override stuff:
+ EPICS_BASE=/corvette/usr/local/epics-devel/base-7.0.2