allow to build specific revision

Vagrantfile

@@ -64,7 +64,5 @@ Vagrant.configure(2) do |config|
   # Enable provisioning with a shell script. Additional provisioners such as
   # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
   # documentation for more information about their specific syntax and use.
-  config.vm.provision "shell", inline: <<-SHELL
-    /bin/bash /vagrant/packaging.sh
-  SHELL
+  config.vm.provision "shell", args: ENV['REVISION'], path: 'packaging.sh'
 end

packaging.sh

@@ -1,7 +1,7 @@
 #! /bin/bash
 
 cat <<EOF
-==============++=== Imposm Packaging Script ============================
+=================== Imposm Packaging Script ============================
 
 This script creates binary packages for Imposm 3 for Linux.
 It installs and builds all dependencies, compiles the master
@@ -27,17 +27,25 @@ or
     $ vagrant ssh
     % bash /vagrant/packaging.sh
 
+You can specify a revision or branch by setting the REVISION
+environment. REVISION defaults to the master branch:
+
+    $ REVISION=mybranch vagrant provision
+
 To shutdown the VM:
     $ vagrant halt
 
 To remove the VM:
     $ vagrant destroy
 
+
 EOF
 
 set -e
 # set -x
 
+REVISION=${1:-master}
+
 BUILD_BASE=$HOME/imposm
 PREFIX=$BUILD_BASE/local
 SRC=$BUILD_BASE/src
@@ -47,7 +55,6 @@ export GOROOT=$BUILD_BASE/go
 IMPOSM_SRC=$GOPATH/src/github.com/omniscale/imposm3
 BUILD_TMP=$BUILD_BASE/imposm-build
 
-
 GEOS_VERSION=3.5.0
 
 export CGO_CFLAGS=-I$PREFIX/include
@@ -150,7 +157,7 @@ pushd $IMPOSM_SRC
     popd
 
     git reset --hard
-    git checkout build-refactor
+    git checkout $REVISION
 
     echo '-> compiling imposm'
     make clean