simple github workflow for cypari2

Author: Jonathan Kliem

.github/workflows/main.yml

@@ -0,0 +1,41 @@
+name: cypari2
+
+on:
+    pull_request:
+        types: [opened, synchronize]
+    push:
+        tags:
+            - '*'
+
+jobs:
+    build:
+        runs-on: ${{ matrix.os }}
+        strategy:
+            fail-fast: false
+            matrix:
+                os: [ubuntu-latest]
+                python-version: [3.6, 3.7, 3.8, 3.9, 3.10]
+                pari-version: ['pari-2.9.4', 'pari-2.9.5', 'pari-2.11.0', 'pari-2.11.0', 'pari-2.11.2', 'pari-2.11.3', 'pari-2.11.4', 'pari-2.13.0', 'snapshot']
+        steps:
+        - env:
+            LC_ALL: C
+            PATH: "/usr/lib/ccache:$PATH"
+            PARI_VERSION: ${{ matrix.pari-version }}
+        - name: Set up the repository
+          uses: actions/checkout@v2
+          with:
+              submodules: recursive
+              fetch-depth: 0
+        - name: Set up Python ${{ matrix.python-version }}
+          uses: actions/setup-python@v2
+          with:
+            python-version: ${{ matrix.python-version }}
+        - name: Install pari
+          run: |
+              ccache -M 256M && ccache -s
+              bash -x .travis-install-pari.sh
+        - name: Local build
+          run: |
+            make check
+            pip install sphinx
+            (cd docs && make html)

.travis-install-pari.sh

@@ -3,7 +3,19 @@
 # Exit on error
 set -e
 
+if [ "$PARI_VERSION" = snapshot ]; then
+    URLDIR=snapshots
+fi
+
+if [ "$URLDIR" = "" ]; then
+    PURE_VERSION=${PARI_VERSION/pari-}
+    URLDIR=OLD/${PURE_VERSION%.*}
+fi
+
 PARI_URL="http://pari.math.u-bordeaux.fr/pub/pari/$URLDIR"
+PARI_URL1="http://pari.math.u-bordeaux.fr/pub/pari/unix"
+PARI_URL2="http://pari.math.u-bordeaux.fr/pub/pari/unstable"
+PARI_URL3="http://pari.math.u-bordeaux.fr/pub/pari/snapshot"
 
 # Figure out PARI version and download location
 # Note that we support giving a list of URLs
@@ -14,7 +26,7 @@ if [ "$PARI_VERSION" = snapshot ]; then
 fi
 
 # Download PARI sources
-wget --no-verbose "$PARI_URL/$PARI_VERSION.tar.gz"
+wget --no-verbose "$PARI_URL/$PARI_VERSION.tar.gz" || wget --no-verbose "$PARI_URL1/$PARI_VERSION.tar.gz" || wget --no-verbose "$PARI_URL2/$PARI_VERSION.tar.gz" || wget --no-verbose "$PARI_URL3/$PARI_VERSION.tar.gz"
 
 # Install
 tar xzf "$PARI_VERSION.tar.gz"