Thanks to [r2677](http://ikiwiki.info/cgi-bin/viewvc.cgi/trunk/pm_filter?revision=2677&root=ikiwiki&view=markup), we're closer to getting clean installs on shared hosts. 

The main problem is that `pm_filter` runs after `./ikiwiki.in`, so the build still fails. If it runs before, we're fine.

===================================================================
--- Makefile.PL (revision 2682)
+++ Makefile.PL (working copy)
@@ -23,8 +23,10 @@
        fi \\
 )
 
-extra_build:
-       LANG=C ./ikiwiki.in doc html --templatedir=templates \
+extra_build:
+       ./pm_filter $(PREFIX) $(VER) $(PROBABLE_INST_LIB) < ikiwiki.in > ikiwiki.out
+       chmod +x ikiwiki.out
+       LANG=C ./ikiwiki.out doc html --templatedir=templates \
                --underlaydir=basewiki \
                --wikiname="ikiwiki" --verbose --no-rcs \
                --exclude=/discussion --no-discussion --userdir=users \
@@ -32,7 +34,6 @@
                --plugin=haiku --plugin=polygen --plugin=fortune
        ./mdwn2man ikiwiki 1 doc/usage.mdwn > ikiwiki.man
        ./mdwn2man ikiwiki-mass-rebuild 8 doc/ikiwiki-mass-rebuild.mdwn > ikiwiki-mass-rebuild.man
-       ./pm_filter $(PREFIX) $(VER) $(PROBABLE_INST_LIB) < ikiwiki.in > ikiwiki.out
        $(MAKE) -C po
 
 extra_clean:
</pre>

> It was failing before because taint mode was enabled, so it didn't see your PERL5LIB setting. 
> Your patch is ok, except that needs to set PERL5LIB=. before calling
> ikiwiki.out, so that it builds using the libs in the source tree, not
> whatever old ikiwiki libs might already be installed. And if it has to
> set PERL5LIB=. , well, that makes any PERL5LIB setting you might have in
> your environment a no-op. Unless it sets `PERL5LIB=.:$PERL5LIB` or
> something. --[[Joey]]

(Is there any reason to create `ikiwiki.out`? Couldn't we just do an in-place replace on `ikiwiki.in`?)

> Yes, it's there because "ikwiki" == "Ikiwiki" on Mac OS X. Also because 
> I don't like automatically modifying source files I have in svn. --[[Joey]]

So, to install from the trunk I can say:

    svn co svn://ikiwiki.kitenet.net/ikiwiki/trunk ikiwiki 
    cd ikiwiki
    patch -p0 <../patches/pm_filter_priority.patch #IOW, apply this patch
    perl Makefile.PL PREFIX=~ LIB=~/lib
    make
    NOTAINT=1 make install
    perl -p -i.bak -e 's{^(use IkiWiki;)}{use lib "$ENV{HOME}/lib";\n$1}' ~/bin/ikiwiki

The last line is necessary for the CGI, because, as with most shared hosts, the user's environment is ignored by the server . It's ugly, but ATM I can't think of a clean way to get rid of it.

> Hmm, the Makefile is supposed to figure out when ikiwiki is installed to
> a location outside of perl's regular lib dirs, and if so, shove its own
> "use lib" setting in, to make it find the ikiwiki libs. Is this not working
> for you? Maybe that `LIB=~/lib` is defeating it? Not familiar with that
> variable.
> --[[Joey]]