Repair Travis CI builds (#574)

* Uninstall PostgreSQL during Travis setup

Recent build images start with PostgreSQL running. Uninstall it so we
can install and run a specific version.

* Skip authentication in Travis builds

The wrong combination of connection parameters will cause psql and other
utilities to prompt for a password, stalling the Travis build
indefinitely.

* Move PostgreSQL setup for Travis builds into script

* Use a newer version of SBCL in Travis builds

Recent versions of bordeaux-threads require ASDF >= 3.1

.travis.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+set -eu
+
+pgdg_repository() {
+	local sourcelist='sources.list.d/pgdg.list'
+
+	sudo apt-key adv --keyserver 'hkp://ha.pool.sks-keyservers.net' --recv-keys 'ACCC4CF8'
+	echo deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main | sudo tee "/etc/apt/$sourcelist"
+	sudo apt-get -o Dir::Etc::sourcelist="$sourcelist" -o Dir::Etc::sourceparts='-' -o APT::Get::List-Cleanup='0' update
+}
+
+postgresql_configure() {
+	sudo tee /etc/postgresql/9.1/main/pg_hba.conf > /dev/null <<-config
+		local  all  all                trust
+		host   all  all  127.0.0.1/32  trust
+	config
+
+	sudo service postgresql restart
+}
+
+postgresql_uninstall() {
+	sudo service postgresql stop
+	xargs sudo apt-get -y --purge remove <<-packages
+		libpq-dev
+		libpq5
+		postgresql
+		postgresql-client-common
+		postgresql-common
+	packages
+}
+
+remote_file() {
+	local target="$1" origin="$2" sum="$3"
+	local check="shasum --algorithm $(( 4 * ${#sum} )) --check"
+	local filesum="$sum  $target"
+
+	curl --location --output "$target" "$origin" && $check <<< "$filesum"
+}
+
+sbcl_install() {
+	sbcl_checksum='eb44d9efb4389f71c05af0327bab7cd18f8bb221fb13a6e458477a9194853958'
+	sbcl_version='1.3.18'
+
+	remote_file "/tmp/sbcl-${sbcl_version}.tgz" "http://prdownloads.sourceforge.net/sbcl/sbcl-${sbcl_version}-x86-64-linux-binary.tar.bz2" "$sbcl_checksum"
+	tar --file  "/tmp/sbcl-${sbcl_version}.tgz" --extract --directory '/tmp'
+	( cd "/tmp/sbcl-${sbcl_version}-x86-64-linux" && sudo ./install.sh )
+}
+
+$1

.travis.yml

@@ -1,20 +1,24 @@
 language: common-lisp
+
 install:
-  - sudo apt-key adv --keyserver hkp://ha.pool.sks-keyservers.net --recv-keys ACCC4CF8
-  - echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main" | sudo tee /etc/apt/sources.list.d/pgdg.list
-  - sudo apt-get update
-  - sudo apt-get install -y cl-asdf sbcl unzip libsqlite3-dev gawk freetds-dev
-  - sudo apt-get install -y postgresql-9.1-ip4r
+  - ./.travis.sh postgresql_uninstall
+  - ./.travis.sh pgdg_repository
+  - sudo apt-get install -y postgresql-9.1-ip4r unzip libsqlite3-dev gawk freetds-dev
+  - ./.travis.sh postgresql_configure
+  - ./.travis.sh sbcl_install
+
 before_script:
-  - sudo -u postgres createuser -S -R -D -E -l pgloader
-  - sudo -u postgres createdb -E UTF8 -O pgloader -hlocalhost pgloader
-  - sudo -u postgres psql -h localhost -d pgloader -c "create extension ip4r;"
-  - PGUSER=pgloader psql -h localhost -d pgloader -c "create schema expected;"
-  - PGUSER=pgloader psql -h localhost -d pgloader -c "create schema err;"
+  - PGUSER=postgres createuser -S -R -D -E -l pgloader
+  - PGUSER=postgres createdb -E UTF8 -O pgloader pgloader
+  - PGUSER=postgres psql -d pgloader -c "create extension ip4r;"
+  - PGUSER=pgloader psql -d pgloader -c "create schema expected;"
+  - PGUSER=pgloader psql -d pgloader -c "create schema err;"
   - make --version
   - make
+
 script:
   - PGUSER=pgloader make check
+
 notifications:
   email:
     - dim@tapoueh.org