sort.sh

#!/bin/bash

olcf_repo="share/spack/repos/olcf/packages"
builtin_repo="hosts/peak/spack/var/spack/repos/builtin/packages"

# Directories in the OLCF repo.
ls -1 $olcf_repo \
  | sort > olcf.pkg_dirs.log

# Directories in the OLCF repo that are actual spackages.
rm  -f olcf.pkgs.log
while read dir; do
  [ -f "$olcf_repo/$dir/package.py" ] && echo "$dir" >> olcf.pkgs.log
done < olcf.pkg_dirs.log

# Directories in the OLCF repo that no longer have a package.py
comm -3 olcf.pkgs.log olcf.pkg_dirs.log > olcf.empty_dirs.log

# Find OLCF packages that are not in the builtin repo.
rm -f olcf.no_upstream.pkgs.log olcf.upstream_pkgs.log olcf.empty_upstream_pkgs.log
while read pkg; do
    if [ ! -d "$builtin_repo/$pkg" ]; then
      echo "$pkg" >> olcf.no_upstream_pkgs.log
    elif [ -f "$builtin_repo/$pkg/package.py" ]; then
      echo "$pkg" >> olcf.upstream_pkgs.log
    else
      echo "$pkg" >> olcf.empty_upstream_pkgs.log
    fi
done < olcf.pkgs.log

readarray -t pkgs < olcf.upstream_pkgs.log
# mapfile -t pkgs < olcf.upstream_pkgs.log
for pkg in "${pkgs[@]}"; do
  read -p "Inspect '$pkg' diff? ([y]/n/a) " -n 1 -r
  echo
  case $REPLY in
     [Nn]*)
       echo "Skipping diff review for '$pkg'"
       continue
       ;;
     [Aa]*)
       echo "Aborting!"
       break
       ;;
     [Yy]*)
       ;&
     *)
       vimdiff "$olcf_repo/$pkg/package.py" "$builtin_repo/$pkg/package.py"
       ;;
  esac  
done

## Alternate loop over packages occupying stdin
# while read pkg; do
#   read -p "Inspect '$pkg' diff? ([y]/n/a) " -u 3 -n 1 -r
#   echo
#   case $REPLY in
#      ^[Nn]*)
#        echo "Skipping diff review for '$pkg'"
#        continue
#        ;;
#      ^[Aa]*)
#        echo "Aborting!"
#        break
#        ;;
#      ^[Yy]*)
#        ;&
#      *)
#        vimdiff "$olcf_repo/$pkg/package.py" "$builtin_repo/$pkg/package.py"
#        ;;
#   esac  
# done 3<&0 <olcf.upstream_pkgs.log