direnv-install-links.sh

#!/bin/sh

linksdir=~/.config/direnv/links
cd $linksdir || (echo "No links dir found"; exit 1)
for rcfile in *
do
    echo "Installing $rcfile"
    destdir=$(echo $rcfile | sed 's,_+_,/,g')
    if [ ! -d $destdir ]
    then
        echo "    $destdir not available on this machine, skipping"
    else
        destfile=$destdir/.envrc
        echo "    to $destfile"
        if [ -f $destfile -a ! -L $destfile ]
        then
            echo "    $destfile exists, skipping"
        else
            rm -f $destfile # If it's an old link, or something
            ln -s $linksdir/$rcfile $destfile
        fi
    fi
done

direnv-new.sh

#!/bin/sh

destdir=$(pwd -P)
destfile=$destdir/.envrc
linksdir=~/.config/direnv/links
rcfile=$linksdir/$(echo $destdir | sed 's,/,_+_,g')

if [ -f "$rcfile" ]
then
   echo "File exists, maybe you meant direnv-install-links?"
   exit 1
fi
if [ -f "$destfile" ]
then
    cat <<EOF
  .envrc exists. Execute:

    mv .envrc $rcfile

  and then run direnv-install-links. Hit Enter to do that now, Ctrl-C otherwise.
EOF
    read dummy
    mv .envrc $rcfile
    direnv-install-links
    exit 0
fi

echo '# -*- mode: sh; -*-' >$rcfile
echo '' >>$rcfile
echo Installing $rcfile in $destfile
ln -s $rcfile $destfile

echo "Edit .envrc now"

Direnv is pretty neat and I use it all the time. But in repos that are not exclusively mine, you cannot add .envrc files and I kept losing them. direnv-new, above, will create a file under ~/.config/direnv and symlink it, and direnv-install-links will install all these links in case you cleaned a repo or something. I combine it with dotfiles in git so I can version control my .envrc files and share them between machines.