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.

<pre>
Index: Makefile.PL
===================================================================
--- 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>

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

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.