add checks to post and pretrans

hunspell.spec

@@ -3,7 +3,7 @@
 Name:      hunspell
 Summary:   A spell checker and morphological analyzer library
 Version:   1.7.0
-Release:   14%{?dist}
+Release:   15%{?dist}
 Source:    https://github.com/hunspell/hunspell/archive/v%{version}.tar.gz
 URL:       https://github.com/hunspell/hunspell
 License:   LGPLv2+ or GPLv2+ or MPLv1.1
@@ -106,15 +106,18 @@ mkdir $RPM_BUILD_ROOT/%{_datadir}/myspell
 %pretrans -p <lua>
 -- Rename dir from myspell to hunspell
 -- DO NOT add a trailing slash at the end.
-old_path = "/usr/share/myspell"
-new_path = "/usr/share/hunspell"
-st = posix.stat(old_path)
-if st and st.type == "directory" then
-  status = os.rename(old_path, new_path)
+old_path = "%{_datadir}/myspell"
+new_path = "%{_datadir}/hunspell"
+old_st = posix.stat(old_path)
+new_st = posix.stat(new_path)
+if old_st and old_st.type == "directory" and not new_st then
+  os.rename(old_path, new_path)
 end
 
-%post
-%__ln_s %{_datadir}/hunspell %{_datadir}/myspell
+%post -p <lua>
+if not posix.stat("%{_datadir}/myspell") then
+  posix.symlink("%{_datadir}/hunspell", "%{_datadir}/myspell")
+end
 %endif
 
 %files -f %{name}.lang
@@ -153,6 +156,11 @@ end
 %endif
 
 %changelog
+* Wed Jan 26 2022 Jens Petersen <petersen@redhat.com> - 1.7.0-15
+- improve the filesystem pretrans and post scripts:
+- pretrans now checks if /usr/share/hunspell exists first
+- post checks that /usr/share/myspell does not exist
+
 * Wed Jan 26 2022 Jens Petersen <petersen@redhat.com> - 1.7.0-14
 - requires coreutils for post script (#2045568)