diff --git a/packages/dev-lang/swi-prolog/swi-prolog-6.6.1.exheres-0 b/packages/dev-lang/swi-prolog/swi-prolog-6.6.1.exheres-0
deleted file mode 100644
index 3cdd0b4..0000000
--- a/packages/dev-lang/swi-prolog/swi-prolog-6.6.1.exheres-0
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (c) 2012 Denis Knauf
-# Distributed under the terms of the GNU General Public License v2
-
-AN=pl-${PV}
-
-SUMMARY="SWI-Prolog offers a comprehensive Free Software Prolog environment"
-HOMEPAGE="http://www.swi-prolog.org/"
-DOWNLOADS="http://www.swi-prolog.org/download/stable/src/${AN}.tar.gz"
-SLOT="0"
-LICENCES="GPL-2 LGPL-2"
-PLATFORMS="~amd64 ~x86"
-DEPENDENCIES=""
-
-MYOPTIONS=""
-WORK=${WORKBASE}/${AN}
-
-src_configure() {
-    econf --libdir="/usr/${LIBDIR}"
-}
-
-src_install() {
-    keepdir /usr/${LIBDIR}/swipl-${PV}/library/dialect/ifprolog
-    default
-}
-
diff --git a/packages/dev-lang/swi-prolog/swi-prolog-6.6.2.exheres-0 b/packages/dev-lang/swi-prolog/swi-prolog-6.6.2.exheres-0
deleted file mode 100644
index 3cdd0b4..0000000
--- a/packages/dev-lang/swi-prolog/swi-prolog-6.6.2.exheres-0
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (c) 2012 Denis Knauf
-# Distributed under the terms of the GNU General Public License v2
-
-AN=pl-${PV}
-
-SUMMARY="SWI-Prolog offers a comprehensive Free Software Prolog environment"
-HOMEPAGE="http://www.swi-prolog.org/"
-DOWNLOADS="http://www.swi-prolog.org/download/stable/src/${AN}.tar.gz"
-SLOT="0"
-LICENCES="GPL-2 LGPL-2"
-PLATFORMS="~amd64 ~x86"
-DEPENDENCIES=""
-
-MYOPTIONS=""
-WORK=${WORKBASE}/${AN}
-
-src_configure() {
-    econf --libdir="/usr/${LIBDIR}"
-}
-
-src_install() {
-    keepdir /usr/${LIBDIR}/swipl-${PV}/library/dialect/ifprolog
-    default
-}
-
diff --git a/packages/dev-lang/swi-prolog/swi-prolog-6.6.6.exheres-0 b/packages/dev-lang/swi-prolog/swi-prolog-6.6.6.exheres-0
deleted file mode 100644
index 3cdd0b4..0000000
--- a/packages/dev-lang/swi-prolog/swi-prolog-6.6.6.exheres-0
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (c) 2012 Denis Knauf
-# Distributed under the terms of the GNU General Public License v2
-
-AN=pl-${PV}
-
-SUMMARY="SWI-Prolog offers a comprehensive Free Software Prolog environment"
-HOMEPAGE="http://www.swi-prolog.org/"
-DOWNLOADS="http://www.swi-prolog.org/download/stable/src/${AN}.tar.gz"
-SLOT="0"
-LICENCES="GPL-2 LGPL-2"
-PLATFORMS="~amd64 ~x86"
-DEPENDENCIES=""
-
-MYOPTIONS=""
-WORK=${WORKBASE}/${AN}
-
-src_configure() {
-    econf --libdir="/usr/${LIBDIR}"
-}
-
-src_install() {
-    keepdir /usr/${LIBDIR}/swipl-${PV}/library/dialect/ifprolog
-    default
-}
-
diff --git a/packages/dev-lang/swi-prolog/swi-prolog-6.2.6.exheres-0 b/packages/dev-lang/swi-prolog/swi-prolog-7.2.3.exheres-0
similarity index 70%
rename from packages/dev-lang/swi-prolog/swi-prolog-6.2.6.exheres-0
rename to packages/dev-lang/swi-prolog/swi-prolog-7.2.3.exheres-0
index 3cdd0b4..afce2a2 100644
--- a/packages/dev-lang/swi-prolog/swi-prolog-6.2.6.exheres-0
+++ b/packages/dev-lang/swi-prolog/swi-prolog-7.2.3.exheres-0
@@ -1,7 +1,7 @@
-# Copyright (c) 2012 Denis Knauf
+# Copyright (c) 2012..2015 Denis Knauf
 # Distributed under the terms of the GNU General Public License v2
 
-AN=pl-${PV}
+AN=swipl-${PV}
 
 SUMMARY="SWI-Prolog offers a comprehensive Free Software Prolog environment"
 HOMEPAGE="http://www.swi-prolog.org/"
@@ -14,12 +14,8 @@ DEPENDENCIES=""
 MYOPTIONS=""
 WORK=${WORKBASE}/${AN}
 
-src_configure() {
-    econf --libdir="/usr/${LIBDIR}"
-}
-
 src_install() {
-    keepdir /usr/${LIBDIR}/swipl-${PV}/library/dialect/ifprolog
+    keepdir /usr/$(exhost --target)/lib/swipl-${PV}/library/dialect/ifprolog
     default
 }