python3Packages.pyepics: init at 3.5.6

pkgs/default.nix

@@ -14,6 +14,7 @@ in
       ++ [
         (final: prev: {
           lewis = final.callPackage ./epnix/tools/lewis {};
+          pyepics = final.callPackage ./epnix/python-modules/pyepics {};
           scanf = final.callPackage ./epnix/tools/scanf {};
         })
       ];
@@ -61,7 +62,7 @@ in
 
       ca-gateway = callPackage ./epnix/tools/ca-gateway {};
 
-      inherit (final.python3Packages) lewis;
+      inherit (final.python3Packages) lewis pyepics;
       inherit (callPackage ./epnix/tools/lewis/lib.nix {}) mkLewisSimulator;
 
       pcas = callPackage ./epnix/tools/pcas {};

pkgs/epnix/python-modules/pyepics/default.nix

@@ -0,0 +1,64 @@
+{
+  stdenv,
+  epnix,
+  epnixLib,
+  buildPythonPackage,
+  fetchPypi,
+  setuptools,
+  setuptools-scm,
+  pyparsing,
+  numpy,
+  importlib-resources,
+}:
+buildPythonPackage rec {
+  pname = "pyepics";
+  version = "3.5.6";
+  format = "pyproject";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-NYj8EVZHTgZR13DZ46ggXRFkqBROJI/CzaNghB7OCwc=";
+  };
+
+  nativeBuildInputs = [
+    setuptools
+    setuptools-scm
+  ];
+
+  buildInputs = [epnix.epics-base];
+
+  propagatedBuildInputs = [
+    pyparsing
+    numpy
+    importlib-resources
+  ];
+
+  postInstall = let
+    # TODO: this only works for x86_64-linux
+    inherit (stdenv) hostPlatform;
+    kernel = hostPlatform.parsed.kernel.name;
+    arch =
+      if hostPlatform.isx86
+      then ""
+      else hostPlatform.parsed.cpu.family;
+    bits = toString hostPlatform.parsed.cpu.bits;
+    system = "${kernel}${arch}${bits}";
+
+    epicsSystem = epnixLib.toEpicsArch hostPlatform;
+  in ''
+    clibsDir=($out/lib/python*/site-packages/epics/clibs)
+    rm -rf $clibsDir/*/
+    mkdir $clibsDir/${system}
+    # No need to copy libCom, since libca depend on it
+    ln -st $clibsDir/${system} ${epnix.epics-base}/lib/${epicsSystem}/libca.so
+  '';
+
+  pythonImportsCheck = ["epics"];
+
+  meta = {
+    description = "Python interface to Epics Channel Access";
+    homepage = "https://github.com/pyepics/pyepics";
+    license = epnixLib.licenses.epics;
+    maintainers = with epnixLib.maintainers; [minijackson];
+  };
+}