Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
135 lines
3 KiB
Bash
135 lines
3 KiB
Bash
#!/bin/bash
|
|
|
|
declare -gA luaPathsSeen=()
|
|
|
|
# shellcheck disable=SC2164,SC2041
|
|
nix_print() {
|
|
if [ ${NIX_DEBUG:-0} -ge $1 ]; then
|
|
echo "$2"
|
|
fi
|
|
}
|
|
|
|
nix_debug() {
|
|
nix_print 3 "$1"
|
|
}
|
|
|
|
addToLuaSearchPathWithCustomDelimiter() {
|
|
local varName="$1"
|
|
local absPattern="$2"
|
|
|
|
# export only if we haven't already got this dir in the search path
|
|
if [[ ${!varName-} == *"$absPattern"* ]]; then return; fi
|
|
|
|
# if the path variable has not yet been set, initialize it to ";;"
|
|
# this is a magic value that will be replaced by the default,
|
|
# allowing relative modules to be used even when there are system modules.
|
|
if [[ ! -v "${varName}" ]]; then export "${varName}=;;"; fi
|
|
|
|
# export only if the folder contains lua files
|
|
shopt -s globstar
|
|
|
|
local adjustedPattern="${absPattern/\?/\*\*\/\*}"
|
|
for _file in $adjustedPattern; do
|
|
export "${varName}=${!varName:+${!varName};}${absPattern}"
|
|
shopt -u globstar
|
|
return;
|
|
done
|
|
shopt -u globstar
|
|
}
|
|
|
|
# used in setup Hooks to load LUA_PATH and LUA_CPATH
|
|
# luaEnvHook
|
|
luaEnvHook() {
|
|
_addToLuaPath "$1"
|
|
}
|
|
|
|
addToLuaPath() {
|
|
local dir="$1"
|
|
|
|
if [ ! -d "$dir" ]; then
|
|
nix_debug "$dir not a directory abort"
|
|
return 0
|
|
fi
|
|
cd "$dir"
|
|
for pattern in @luapathsearchpaths@; do
|
|
addToLuaSearchPathWithCustomDelimiter LUA_PATH "$PWD/$pattern"
|
|
done
|
|
|
|
# LUA_CPATH
|
|
for pattern in @luacpathsearchpaths@; do
|
|
addToLuaSearchPathWithCustomDelimiter LUA_CPATH "$PWD/$pattern"
|
|
done
|
|
cd - >/dev/null
|
|
}
|
|
|
|
|
|
_addToLuaPath() {
|
|
local dir="$1"
|
|
|
|
echo "_addToLuaPath called for dir $dir"
|
|
|
|
if [[ ! -d "$dir" ]]; then
|
|
nix_debug "$dir not a directory abort"
|
|
return 0
|
|
fi
|
|
|
|
# set -x
|
|
# if [ -n "${pythonPathsSeen[$dir]}" ]; then return; fi
|
|
if [[ -n "${luaPathsSeen[$dir]:-}" ]]; then
|
|
# if [ -n "${luaPathsSeen[$dir]}" ]; then
|
|
echo "$dir already parsed"
|
|
return
|
|
fi
|
|
|
|
luaPathsSeen["$dir"]=true
|
|
|
|
# shellcheck disable=SC2164
|
|
cd "$dir"
|
|
for pattern in @luapathsearchpaths@; do
|
|
addToLuaSearchPathWithCustomDelimiter LUA_PATH "$PWD/$pattern"
|
|
done
|
|
|
|
# LUA_CPATH
|
|
for pattern in @luacpathsearchpaths@; do
|
|
addToLuaSearchPathWithCustomDelimiter LUA_CPATH "$PWD/$pattern"
|
|
done
|
|
|
|
cd - >/dev/null
|
|
|
|
addToSearchPath program_PATH "$dir"/bin
|
|
|
|
# Inspect the propagated inputs (if they exist) and recur on them.
|
|
local prop="$dir/nix-support/propagated-build-inputs"
|
|
if [ -e "$prop" ]; then
|
|
local new_path
|
|
for new_path in $(cat $prop); do
|
|
echo "newpath: $new_path"
|
|
_addToLuaPath "$new_path"
|
|
done
|
|
fi
|
|
|
|
}
|
|
|
|
# Builds environment variables like LUA_PATH and PATH walking through closure
|
|
# of dependencies.
|
|
buildLuaPath() {
|
|
local luaPath="$1"
|
|
local path
|
|
|
|
echo "BUILD_LUA_PATH"
|
|
|
|
# # set -x
|
|
# # Create an empty table of paths (see doc on loadFromPropagatedInputs
|
|
# # for how this is used). Build up the program_PATH and program_LUA_PATH
|
|
# # variables.
|
|
# declare -gA luaPathsSeen=()
|
|
# # shellcheck disable=SC2034
|
|
program_PATH=
|
|
luaPathsSeen["@lua@"]=1
|
|
# addToSearchPath program_PATH @lua@/bin
|
|
for path in $luaPath; do
|
|
_addToLuaPath "$path"
|
|
done
|
|
}
|
|
|
|
|