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c4519cf8a6
* lua: add withPackages function First step towards more automation similar to the haskell backend. Follow up of https://github.com/NixOS/nixpkgs/pull/33903
48 lines
986 B
Bash
48 lines
986 B
Bash
# set -e
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nix_print() {
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if (( "${NIX_DEBUG:-0}" >= $1 )); then
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echo "$2"
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fi
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}
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nix_debug() {
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nix_print 3 "$1"
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}
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addToLuaSearchPathWithCustomDelimiter() {
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local varName="$1"
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local absPattern="$2"
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# delete longest match starting from the lua placeholder '?'
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local topDir="${absPattern%%\?*}"
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# export only if the folder exists else LUA_PATH grows too big
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if [ ! -d "$topDir" ]; then return; fi
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export "${varName}=${!varName:+${!varName};}${absPattern}"
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}
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addToLuaPath() {
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local dir="$1"
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if [[ ! -d "$dir" ]]; then
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nix_debug "$dir not a directory abort"
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return 0
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fi
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cd "$dir"
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for pattern in @luapathsearchpaths@;
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do
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addToLuaSearchPathWithCustomDelimiter LUA_PATH "$PWD/$pattern"
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done
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# LUA_CPATH
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for pattern in @luacpathsearchpaths@;
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do
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addToLuaSearchPathWithCustomDelimiter LUA_CPATH "$PWD/$pattern"
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done
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cd -
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}
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addEnvHooks "$hostOffset" addToLuaPath
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