Automatically add the current directory to the GOPATH when changing into it

.bash_profile

# GOPATH helper

goPathFile="$HOME/.gopathsrc"

if [ -f "$goPathFile" ]; then
    source "$goPathFile"
fi

.gopathsrc

CHECK_FILENAME=.gopath

setGoPath() {
  if [ -f "$PWD/$CHECK_FILENAME" ]; then
    if ! [[ "$GOPATH" =~ (^|:)"$PWD"(:|$) ]]; then
      echo "Adding $PWD to GOPATH"
      export GOPATH=$GOPATH:$PWD
      echo $GOPATH
    fi
  fi
}

if [ "$PROMPT_COMMAND" != "*setGoPath*" ]; then
  export PREV_PROMPT_COMMAND=$PROMPT_COMMAND
  export PROMPT_COMMAND="$PROMPT_COMMAND; setGoPath"
fi

GOPATH Helper

Setup your shell to automatically add a directory to the GOPATH environment variable when you change directories

I got tired of setting the GOPATH in an unintelligent way for my projects so I created these helpers.

• Add the contents of the first file to your .bash_profile

12:22 $ cat .bash_profile
...
fi

# GOPATH helper

goPathFile="$HOME/.gopath"

if [ -f "$goPathFile" ]; then
    source "$goPathFile"
fi
...

• Install the .gopathsrc file into your $HOME directory

12:24 $ cat .gopathsrc 
CHECK_FILENAME=.gopath

setGoPath() {
...

• source your profile

12:24 $ source ~/.bash_profile
✔ ~ 

• Add your .gopath file to your project directory:

13:30 $ echo $GOPATH

✔ ~ 
13:31 $ touch work/gotut/.gopath
✔ ~ 
13:31 $ cd work/gotut/
Adding /Users/wes/work/gotut to GOPATH
:/Users/wes/work/gotut
✔ ~/work/gotut [master|✚ 2…14] 
13:31 $ cd ../bashy/
✔ ~/work/bashy [master|✔] 
13:31 $ cd -
/Users/wes/work/gotut
✔ ~/work/gotut [master|✚ 2…14] 

This solution will constantly increase the number of paths within GOPATH. You need to modify it by keeping a "constant" part of the GOPATH in a separate environment and exporting GOPATH in setGoPath() by concatenating the "constant" path with $PWD.

@minherz There is no downside to having repeated elements in the path while foregoing the complexity of maintaining the unique elements you are suggesting.

As you wish. I would not dispute about the "foregoing maintenance complexity" because it depends on the observer. Mind though that the longer the path the more time is required to process things and more chances for ambiguity.