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# Copyright 2013-2018 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
########################################################################
#
# This file is part of Spack and sets up the spack environment for
# bash and zsh. This includes dotkit support, module support, and
# it also puts spack in your path. The script also checks that
# at least module support exists, and provides suggestions if it
# doesn't. Source it like this:
#
# . /path/to/spack/share/spack/setup-env.sh
#
########################################################################
# This is a wrapper around the spack command that forwards calls to
# 'spack use' and 'spack unuse' to shell functions. This in turn
# allows them to be used to invoke dotkit functions.
#
# 'spack use' is smarter than just 'use' because it converts its
# arguments into a unique spack spec that is then passed to dotkit
# commands. This allows the user to use packages without knowing all
# their installation details.
#
# e.g., rather than requiring a full spec for libelf, the user can type:
#
# spack use libelf
#
# This will first find the available libelf dotkits and use a
# matching one. If there are two versions of libelf, the user would
# need to be more specific, e.g.:
#
# spack use libelf@0.8.13
#
# This is very similar to how regular spack commands work and it
# avoids the need to come up with a user-friendly naming scheme for
# spack dotfiles.
########################################################################
function spack {
# Zsh does not do word splitting by default, this enables it for this function only
if [ -n "${ZSH_VERSION:-}" ]; then
emulate -L sh
fi
# save raw arguments into an array before butchering them
args=( "$@" )
# accumulate initial flags for main spack command
_sp_flags=""
while [[ "$1" =~ ^- ]]; do
_sp_flags="$_sp_flags $1"
shift
done
# h and V flags don't require further output parsing.
if [[ (! -z "$_sp_flags") && ("$_sp_flags" =~ '.*h.*' || "$_sp_flags" =~ '.*V.*') ]]; then
command spack $_sp_flags "$@"
return
fi
_sp_subcommand=""
if [ -n "$1" ]; then
_sp_subcommand="$1"
shift
fi
_sp_spec=("$@")
# Filter out use and unuse. For any other commands, just run the
# command.
case $_sp_subcommand in
"cd")
_sp_arg=""
if [ -n "$1" ]; then
_sp_arg="$1"
shift
fi
if [ "$_sp_arg" = "-h" ]; then
command spack cd -h
else
LOC="$(spack location $_sp_arg "$@")"
if [[ -d "$LOC" ]] ; then
cd "$LOC"
else
return 1
fi
fi
return
;;
"env")
_sp_arg=""
if [ -n "$1" ]; then
_sp_arg="$1"
shift
fi
if [ "$_sp_arg" = "-h" ]; then
command spack env -h
else
case $_sp_arg in
activate)
if [ -z "$1" -o "${1#-}" != "$1" ]; then
# no args or does not start with -: just execute
command spack "${args[@]}"
else
# actual call to activate: source the output
eval $(command spack $_sp_flags env activate --sh "$@")
fi
;;
deactivate)
if [ -n "$1" ]; then
# with args: execute the command
command spack "${args[@]}"
else
# no args: source the output.
eval $(command spack $_sp_flags env deactivate --sh)
fi
;;
*)
command spack "${args[@]}"
;;
esac
fi
return
;;
"use"|"unuse"|"load"|"unload")
# Shift any other args for use off before parsing spec.
_sp_subcommand_args=""
_sp_module_args=""
while [[ "$1" =~ ^- ]]; do
if [ "$1" = "-r" -o "$1" = "--dependencies" ]; then
_sp_subcommand_args="$_sp_subcommand_args $1"
else
_sp_module_args="$_sp_module_args $1"
fi
shift
done
_sp_spec=("$@")
# Here the user has run use or unuse with a spec. Find a matching
# spec using 'spack module find', then use the appropriate module
# tool's commands to add/remove the result from the environment.
# If spack module command comes back with an error, do nothing.
case $_sp_subcommand in
"use")
if _sp_full_spec=$(command spack $_sp_flags module dotkit find $_sp_subcommand_args "${_sp_spec[@]}"); then
use $_sp_module_args $_sp_full_spec
else
$(exit 1)
fi ;;
"unuse")
if _sp_full_spec=$(command spack $_sp_flags module dotkit find $_sp_subcommand_args "${_sp_spec[@]}"); then
unuse $_sp_module_args $_sp_full_spec
else
$(exit 1)
fi ;;
"load")
if _sp_full_spec=$(command spack $_sp_flags module tcl find $_sp_subcommand_args "${_sp_spec[@]}"); then
module load $_sp_module_args $_sp_full_spec
else
$(exit 1)
fi ;;
"unload")
if _sp_full_spec=$(command spack $_sp_flags module tcl find $_sp_subcommand_args "${_sp_spec[@]}"); then
module unload $_sp_module_args $_sp_full_spec
else
$(exit 1)
fi ;;
esac
;;
*)
command spack "${args[@]}"
;;
esac
}
########################################################################
# Prepends directories to path, if they exist.
# pathadd /path/to/dir # add to PATH
# or pathadd OTHERPATH /path/to/dir # add to OTHERPATH
########################################################################
function _spack_pathadd {
# If no variable name is supplied, just append to PATH
# otherwise append to that variable.
_pa_varname=PATH
_pa_new_path="$1"
if [ -n "$2" ]; then
_pa_varname="$1"
_pa_new_path="$2"
fi
# Do the actual prepending here.
eval "_pa_oldvalue=\${${_pa_varname}:-}"
if [ -d "$_pa_new_path" ] && [[ ":$_pa_oldvalue:" != *":$_pa_new_path:"* ]]; then
if [ -n "$_pa_oldvalue" ]; then
eval "export $_pa_varname=\"$_pa_new_path:$_pa_oldvalue\""
else
export $_pa_varname="$_pa_new_path"
fi
fi
}
# Export spack function so it is available in subshells (only works with bash)
if [ -n "${BASH_VERSION:-}" ]; then
export -f spack
fi
#
# Figure out where this file is. Below code needs to be portable to
# bash and zsh.
#
_sp_source_file="${BASH_SOURCE[0]}" # Bash's location of last sourced file.
if [ -z "$_sp_source_file" ]; then
_sp_source_file="$0:A" # zsh way to do it
if [[ "$_sp_source_file" == *":A" ]]; then
# Not zsh either... bail out with plain old $0,
# which WILL NOT work if this is sourced indirectly.
_sp_source_file="$0"
fi
fi
#
# Find root directory and add bin to path.
#
_sp_share_dir=$(cd "$(dirname $_sp_source_file)" && pwd)
_sp_prefix=$(cd "$(dirname $(dirname $_sp_share_dir))" && pwd)
_spack_pathadd PATH "${_sp_prefix%/}/bin"
export SPACK_ROOT=${_sp_prefix}
#
# Determine which shell is being used
#
function _spack_determine_shell() {
PS_FORMAT= ps -p $$ | tail -n 1 | awk '{print $4}' | sed 's/^-//' | xargs basename
}
export SPACK_SHELL=$(_spack_determine_shell)
#
# Check whether a function of the given name is defined
#
function _spack_fn_exists() {
LANG= type $1 2>&1 | grep -q 'function'
}
need_module="no"
if ! _spack_fn_exists use && ! _spack_fn_exists module; then
need_module="yes"
fi;
#
# make available environment-modules
#
if [ "${need_module}" = "yes" ]; then
eval `spack --print-shell-vars sh,modules`
# _sp_module_prefix is set by spack --print-sh-vars
if [ "${_sp_module_prefix}" != "not_installed" ]; then
#activate it!
export MODULE_PREFIX=${_sp_module_prefix}
_spack_pathadd PATH "${MODULE_PREFIX}/Modules/bin"
module() { eval `${MODULE_PREFIX}/Modules/bin/modulecmd ${SPACK_SHELL} $*`; }
fi;
else
eval `spack --print-shell-vars sh`
fi;
#
# set module system roots
#
_spack_pathadd DK_NODE "${_sp_dotkit_root%/}/$_sp_sys_type"
_spack_pathadd MODULEPATH "${_sp_tcl_root%/}/$_sp_sys_type"
# Add programmable tab completion for Bash
#
if [ -n "${BASH_VERSION:-}" ]; then
source $_sp_share_dir/spack-completion.bash
fi
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