diff --git a/gnucap-20210107-sysconfdir.patch b/gnucap-20210107-sysconfdir.patch
new file mode 100644
index 0000000..b7a007a
--- /dev/null
+++ b/gnucap-20210107-sysconfdir.patch
@@ -0,0 +1,11 @@
+--- gnucap-20210107/main/configure.orig	2021-12-28 08:41:28.405969952 +0100
++++ gnucap-20210107/main/configure	2021-12-28 08:41:44.960231518 +0100
+@@ -36,7 +36,7 @@
+     -e "s#@includedir@#$\{prefix\}/include#" \
+     -e "s#@datarootdir@#$\{prefix\}/share/gnucap#" \
+     -e "s#@docdir@#$\{prefix\}/share/doc/gnucap#" \
+-    -e "s#@sysconfdir@#$\{prefix\}/etc#" \
++    -e "s#@sysconfdir@#/etc#" \
+     -e "s#@pkglibdir@#$pkglibdir#" \
+     -e "s#@pkglibdir_expanded@#$pkglibdir_expanded#" \
+     -e "s#@CXXFLAGS@#$CCFLAGS#" \
diff --git a/gnucap.spec b/gnucap.spec
index bb2e102..bfd35e5 100644
--- a/gnucap.spec
+++ b/gnucap.spec
@@ -1,7 +1,7 @@
 %define pckver %(echo %version | tr . -) 
 Name:          gnucap
 Epoch:         1
-Version:       2013.04.23
+Version:       20210107
 Release:       1mamba
 Summary:       A general purpose circuit simulator
 Group:         Applications/Scientific
@@ -9,11 +9,12 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://gnucap.org/dokuwiki/doku.php?id=gnucap:start
-Source:        http://gnucap.org/devel/gnucap-%{pckver}.tar.gz
+Source:        https://codeberg.org/gnucap/gnucap.git/%{version}/gnucap-%{version}.tar.bz2
 Patch0:        %{name}-0.34-install.patch
 Patch1:        %{name}-0.34-libtermcap.patch
 Patch2:        gnucap-2013.04.23-readline.patch
 Patch3:        gnucap-2013.04.23-gcc-4.3.patch
+Patch4:        gnucap-20210107-sysconfdir.patch
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -23,8 +24,6 @@ BuildRequires: libstdc++6-devel
 BuildRequires: libtermcap-devel
 ## AUTOBUILDREQ-END
 BuildRequires: gcc-c++
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
-# patches  http://www.redhat.com/archives/fedora-extras-commits/2006-April/msg02132.html
 
 %description
 Gnucap is a general purpose circuit simulator.
@@ -39,20 +38,24 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 %description devel
 This package contains libraries and header files for developing applications that use %{name}.
 
+%debug_package
+
 %prep
 %setup -q -n gnucap-%{pckver}
-%patch2 -p1
-%patch3 -p1
+#%patch2 -p1
+#%patch3 -p1
+%patch4 -p1
 
 %build
-%configure --prefix=%{_prefix}
+%configure \
+   --prefix=%{_prefix}
 
 #export CCFLAGS="%{optflags}"
 %make -j1
 
 %install
 [ "%{buildroot}" != / ] && rm -rf %{buildroot}
-%makeinstall PREFIX=%{buildroot}%{_prefix}
+%makeinstall PREFIX=%{_prefix} INSTALL_SYSCONF_DIR=%{_sysconfdir}
 
 %ifarch x86_64
 mv %{buildroot}%{_prefix}/lib %{buildroot}%{_libdir}
@@ -68,21 +71,27 @@ mv %{buildroot}%{_prefix}/lib %{buildroot}%{_libdir}
 
 %files
 %defattr(-,root,root)
+%config(noreplace) %{_sysconfdir}/gnucap.conf
 %{_bindir}/gnucap
 %{_bindir}/gnucap-modelgen
-%{_libdir}/libgnucap-default-plugins.so
+%dir %{_libdir}/gnucap
+%{_libdir}/gnucap/gnucap-default-plugins.so
 %{_libdir}/libgnucap.so
 %doc AUTHORS COPYING
 #%doc examples/*
 
 %files devel
 %defattr(-,root,root)
+%{_bindir}/gnucap-conf
 %dir %{_includedir}/gnucap
 %{_includedir}/gnucap/*.h
 %{_includedir}/gnucap/spice-wrapper.cc
-%doc NEWS README
+#%doc NEWS README
 
 %changelog
+* Thu Dec 23 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 20210107-1mamba
+- update to 20210107
+
 * Sat Apr 05 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 2013.04.23-1mamba
 - update to 2013.04.23