move generating of /etc/nanorc to %build

nano.spec

@@ -31,25 +31,26 @@ cd build
 %configure
 make %{?_smp_mflags}
 
-%install
-cd build
-%make_install
-rm -f %{buildroot}%{_infodir}/dir
-cp %{SOURCE2} ./nanorc
-
-# downstream changes to /etc/nanorc
+# generate default /etc/nanorc
 # - disable line wrapping by default
 # - set hunspell as the default spell-checker
 # - enable syntax highlighting by default (#1270712)
 sed -e 's/# set nowrap/set nowrap/' \
     -e 's/^#.*set speller.*$/set speller "hunspell"/' \
     -e 's|^# \(include "/usr/share/nano/\*.nanorc"\)|\1|' \
-    doc/sample.nanorc >> ./nanorc
-mkdir -p %{buildroot}%{_sysconfdir}
-install -m 644 ./nanorc %{buildroot}%{_sysconfdir}/nanorc
+    %{SOURCE2} doc/sample.nanorc > ./nanorc
+
+%install
+cd build
+%make_install
+rm -f %{buildroot}%{_infodir}/dir
 
 # remove installed HTML documentation
-rm -f "%{buildroot}%{_docdir}"/nano/{nano,nano.1,nanorc.5,rnano.1}.html
+rm -f %{buildroot}%{_docdir}/nano/{nano,nano.1,nanorc.5,rnano.1}.html
+
+# install default /etc/nanorc
+mkdir -p %{buildroot}%{_sysconfdir}
+install -m 0644 ./nanorc %{buildroot}%{_sysconfdir}/nanorc
 
 %find_lang %{name}