add ESS ADS driver support (Beckhoff TwinCAT)

lib/maintainers/maintainer-list.nix

@@ -62,4 +62,8 @@ See `<nixpkgs/maintainers/scripts/check-maintainer-github-handles.sh>` for an ex
     email = "[email protected]";
     name = "Stéphane Tzvetkov";
   };
+  agaget = {
+    email = "[email protected]";
+    name = "Alexis Gaget";
+  };
 }

pkgs/default.nix

@@ -25,6 +25,7 @@ in
       # EPICS support modules
 
       support = recurseExtensible (_self: {
+        ads = callPackage ./epnix/support/ads {};
         asyn = callPackage ./epnix/support/asyn {};
         autosave = callPackage ./epnix/support/autosave {};
         calc = callPackage ./epnix/support/calc {};

pkgs/epnix/support/ads/default.nix

@@ -0,0 +1,45 @@
+{
+  lib,
+  epnixLib,
+  epnix,
+  mkEpicsPackage,
+  fetchFromGitLab,
+  local_config_site ? {},
+  local_release ? {},
+}:
+mkEpicsPackage rec {
+  pname = "ads";
+  version = "2023.08.20";
+  varname = "ADS";
+
+  inherit local_config_site local_release;
+
+  src = fetchFromGitLab {
+    domain = "gitlab.esss.lu.se";
+    owner = "epics-modules";
+    repo = "epics-twincat-ads";
+    rev = "f07f73cd20320e40e908ed281527a81a4799bbce";
+    fetchSubmodules = true;
+    sha256 = "sha256-NCuT2EpEBEVMzQw4cU8l0AUYVXa9fUtEOGpynG5Z85M=";
+  };
+
+  # Patch used to fix parallelization compilation issue caused by EPNix compare to standard compilation.
+  # Wait for PR https://gitlab.esss.lu.se/epics-modules/epics-twincat-ads/-/merge_requests/3
+  patches = [./fixDep.patch];
+
+  propagatedBuildInputs = with epnix.support; [asyn calc];
+
+  preBuild = ''
+    touch configure/RELEASE_PATHS.local
+    touch configure/RELEASE_LIBS.local
+  '';
+
+  meta = {
+    description = "Module providing EPICS support for ADS Protocol (Automation Device Specification)";
+    homepage = "https://www.beckhoff.com/en-en/products/automation/twincat/tc1xxx-twincat-3-base/tc1000.html";
+    # Wait for ESS team answer about the license :  https://gitlab.esss.lu.se/epics-modules/epics-twincat-ads/-/issues/1
+    # lib.licenses.free don't work in EPNIX for now
+    license = epnixLib.licenses.epics;
+    maintainers = with epnixLib.maintainers; [agaget];
+  };
+}

pkgs/epnix/support/ads/fixDep.patch

@@ -0,0 +1,12 @@
+diff --git a/Makefile.epics b/Makefile.epics
+index ef5c909..a709c05 100644
+--- a/Makefile.epics
++++ b/Makefile.epics
+@@ -10,6 +10,7 @@ endef
+ $(foreach dir, $(filter-out configure,$(DIRS)),$(eval $(call DIR_template,$(dir))))
+
+ iocBoot_DEPEND_DIRS += $(filter %App,$(DIRS))
++adsExApp_DEPEND_DIRS += adsApp
+
+ include $(TOP)/configure/RULES_TOP
+