Utility scripts to maintain 32/64 bit builds of Go, and easily switch between them.

.zshrc

function go-switch() {
    eval `command go-switch $@`
    rehash
}

go-switch

#!/bin/bash

set -e

if [[ -z $1 ]]; then
    echo "Usage: $0 386|amd64"
    exit 1
fi

case $1 in
    386|amd64)
        if [[ -e ~/go ]]; then
            if [[ -L ~/go ]]; then
                rm ~/go
            else
                echo "~/go exists and is not a symlink, aborting"
                exit 1
            fi
        fi
        ln -s ~/go-builds/$1 ~/go
        ;;
    *)
        echo "Unknown arch $1"
        exit 1
esac

update-go

#!/bin/bash

ROOT=$HOME/go-builds

mkdir -p $ROOT

if [[ -d $ROOT/upstream ]]; then
    (cd $ROOT/upstream && hg pull)
else
    (cd $ROOT && hg clone https://go.googlecode.com/hg/ upstream)
fi

for arch in 386 amd64; do
    (
        cd $ROOT
        rm -rf $arch
        hg clone -u weekly upstream $arch
        export GOROOT=$ROOT/$arch
        export GOARCH=$arch
        cd $GOROOT/src
        ./all.bash
    )&
done

wait