forked from mirrors/nixpkgs
bf486f784d
This change fixes byte compilation of, e.g., Helm without breaking builds using, e.g., `trivialBuild`. See https://github.com/NixOS/nixpkgs/pull/82604#issuecomment-607201755
34 lines
1.1 KiB
Bash
34 lines
1.1 KiB
Bash
addToEmacsLoadPath() {
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local lispDir="$1"
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if [[ -d $lispDir && ${EMACSLOADPATH-} != *"$lispDir":* ]] ; then
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# It turns out, that the trailing : is actually required
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# see https://www.gnu.org/software/emacs/manual/html_node/elisp/Library-Search.html
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export EMACSLOADPATH="$lispDir:${EMACSLOADPATH-}"
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fi
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}
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addEmacsVars () {
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addToEmacsLoadPath "$1/share/emacs/site-lisp"
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# Add sub paths to the Emacs load path if it is a directory
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# containing .el files. This is necessary to build some packages,
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# e.g., using trivialBuild.
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for lispDir in \
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"$1/share/emacs/site-lisp/"* \
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"$1/share/emacs/site-lisp/elpa/"*; do
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if [[ -d $lispDir && "$(echo "$lispDir"/*.el)" ]] ; then
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addToEmacsLoadPath "$lispDir"
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fi
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done
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}
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if [[ ! -v emacsHookDone ]]; then
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emacsHookDone=1
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# If this is for a wrapper derivation, emacs and the dependencies are all
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# run-time dependencies. If this is for precompiling packages into bytecode,
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# emacs is a compile-time dependency of the package.
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addEnvHooks "$hostOffset" addEmacsVars
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addEnvHooks "$targetOffset" addEmacsVars
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fi
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