Disable creation of /var and /etc

--- a/Makefile.am	2020-03-08 16:57:09.511535600 +0100
+++ b/Makefile.am	2020-04-21 11:36:49.827182272 +0200
@@ -2376,16 +2376,6 @@
 endif
 
 install-exec-hook:
-	$(mkinstalldirs) $(DESTDIR)$(localstatedir)/run
-	$(mkinstalldirs) $(DESTDIR)$(localstatedir)/lib/$(PACKAGE_NAME)
-	$(mkinstalldirs) $(DESTDIR)$(localstatedir)/log
-	$(mkinstalldirs) $(DESTDIR)$(sysconfdir)
-	if test -e $(DESTDIR)$(sysconfdir)/collectd.conf; \
-	then \
-		$(INSTALL) -m 0640 $(builddir)/src/collectd.conf $(DESTDIR)$(sysconfdir)/collectd.conf.pkg-orig; \
-	else \
-		$(INSTALL) -m 0640 $(builddir)/src/collectd.conf $(DESTDIR)$(sysconfdir)/collectd.conf; \
-	fi; \
 	$(mkinstalldirs) $(DESTDIR)$(cpkgdatadir)
 	$(INSTALL) -m 0644 $(srcdir)/src/types.db $(DESTDIR)$(cpkgdatadir)/types.db;
 	$(INSTALL) -m 0644 $(srcdir)/src/postgresql_default.conf \
value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=6925cd788b5a36481dd261c78fb954a9825e3041'>refs</a><a class='active' href='/guix/log/gnu/packages/mcrypt.scm'>log</a><a href='/guix/tree/gnu/packages/mcrypt.scm?id=6925cd788b5a36481dd261c78fb954a9825e3041'>tree</a><a href='/guix/commit/gnu/packages/mcrypt.scm?id=6925cd788b5a36481dd261c78fb954a9825e3041'>commit</a><a href='/guix/diff/gnu/packages/mcrypt.scm?id=6925cd788b5a36481dd261c78fb954a9825e3041'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/mcrypt.scm'>
<input type='hidden' name='id' value='6925cd788b5a36481dd261c78fb954a9825e3041'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=6925cd788b5a36481dd261c78fb954a9825e3041'>root</a>/<a href='/guix/log/gnu?id=6925cd788b5a36481dd261c78fb954a9825e3041'>gnu</a>/<a href='/guix/log/gnu/packages?id=6925cd788b5a36481dd261c78fb954a9825e3041'>packages</a>/<a href='/guix/log/gnu/packages/mcrypt.scm?id=6925cd788b5a36481dd261c78fb954a9825e3041'>mcrypt.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/mcrypt.scm?id=6925cd788b5a36481dd261c78fb954a9825e3041&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>