require libpeas 1.8.0

Python 3 loader was added in 1.7.0, so let's require next stable release

Author: monsta

configure.ac

@@ -91,7 +91,7 @@ MATE_DESKTOP_REQUIRED=1.17.0
 GDKPIXBUF_REQUIRED=2.30.0
 SHARED_MIME_INFO_REQUIRED=0.20
 EXEMPI_REQUIRED=1.99.5
-LIBPEAS_REQUIRED=1.2.0
+LIBPEAS_REQUIRED=1.8.0
 
 PKG_CHECK_MODULES(GMODULE, gmodule-2.0, [GMODULE_ADD="gmodule-2.0"],[GMODULE_ADD=""])
 EOM_MODULES="gtk+-3.0 >= $GTK_REQUIRED \