simpler travis script

Author: videlec

.travis-install-pari.sh

@@ -3,22 +3,16 @@
 # Exit on error
 set -e
 
+PARI_URL="http://pari.math.u-bordeaux.fr/pub/pari/$URLDIR"
+
 # Figure out PARI version and download location
 # Note that we support giving a list of URLs
 if [ "$PARI_VERSION" = snapshot ]; then
-    PARI_VERSION=$(wget -qO- "http://pari.math.u-bordeaux.fr/pub/pari/snapshots" | sed -n 's/.*href="\(pari-.*-g.*\)[.]tar[.]gz".*/\1/p')
-    URL="http://pari.math.u-bordeaux.fr/pub/pari/snapshots"
-else
-    URL="http://pari.math.u-bordeaux.fr/pub/pari/unix http://pari.math.u-bordeaux.fr/pub/pari/unstable"
+    PARI_VERSION=$(wget -qO- "$PARI_URL" | sed -n 's/.*href="\(pari-.*-g.*\)[.]tar[.]gz".*/\1/p')
 fi
 
 # Download PARI sources
-for url in $URL; do
-    if wget --no-verbose "$url/$PARI_VERSION.tar.gz"; then
-        # Success
-        break
-    fi
-done
+wget --no-verbose "$PARI_URL/$PARI_VERSION.tar.gz"
 
 # Install
 tar xzf "$PARI_VERSION.tar.gz"

.travis.yml

@@ -12,8 +12,12 @@ python:
   - "3.6"
 env:
   - PARI_VERSION=pari-2.8.1.beta
+    URLDIR=unstable
   - PARI_VERSION=pari-2.9.3
+    URLDIR=unix
   - PARI_VERSION=snapshot
+    URLDIR=snapshots
+
 before_install:
   - export PATH="/usr/lib/ccache:$PATH"
   - ccache -M 256M && ccache -s