On my machine, I keep all source files under ~/src. Setting GOPATH to ~ works well,
except the most recent weekly fails its tests unless I unset GOPATH first.

What steps will reproduce the problem?
1. export GOPATH=~
2. export GOROOT=~/src/go
3. cd ~/src/go/src
4. ./all.bash

What is the expected output?
All tests pass

What do you see instead?
After many lines,

# ../misc/cgo/test
can't load package: ~/src/go/misc/cgo/test/callback.go:14:2: local import
"./backdoor" in non-local package

Which operating system are you using?
Same results on both Mac OS 10.6 and Debian Stable

Which revision are you using?  (hg identify)
3cdba7b0650c weekly/weekly.2012-03-13