4887f44d02
Emacs will call package-initialize itself, if required, or the user will call it in their initialization file. There is no reason to call it in the wrapper and doing so only increases start-up time.
72 lines
2.4 KiB
Nix
72 lines
2.4 KiB
Nix
{ stdenv, makeWrapper, emacs }:
|
|
|
|
with stdenv.lib;
|
|
|
|
explicitRequires: # packages explicitly requested by the user
|
|
|
|
stdenv.mkDerivation {
|
|
name = (appendToName "with-packages" emacs).name;
|
|
nativeBuildInputs = [ emacs makeWrapper ];
|
|
inherit emacs explicitRequires;
|
|
phases = [ "installPhase" ];
|
|
installPhase = ''
|
|
requires=""
|
|
for pkg in $explicitRequires; do
|
|
findInputs $pkg requires propagated-user-env-packages
|
|
done
|
|
# requires now holds all requested packages and their transitive dependencies
|
|
|
|
siteStart="$out/share/emacs/site-lisp/site-start.el"
|
|
|
|
addEmacsPath() {
|
|
local list=$1
|
|
local path=$2
|
|
# Add the path to the search path list, but only if it exists
|
|
if [[ -d "$path" ]]; then
|
|
echo "(add-to-list '$list \"$path\")" >>"$siteStart"
|
|
fi
|
|
}
|
|
|
|
# Add a dependency's paths to site-start.el
|
|
addToEmacsPaths() {
|
|
addEmacsPath "exec-path" "$1/bin"
|
|
addEmacsPath "load-path" "$1/share/emacs/site-lisp"
|
|
addEmacsPath "package-directory-list" "$1/share/emacs/site-lisp/elpa"
|
|
}
|
|
|
|
mkdir -p $out/share/emacs/site-lisp
|
|
# Begin the new site-start.el by loading the original, which sets some
|
|
# NixOS-specific paths. Paths are searched in the reverse of the order
|
|
# they are specified in, so user and system profile paths are searched last.
|
|
echo "(load-file \"$emacs/share/emacs/site-lisp/site-start.el\")" >"$siteStart"
|
|
echo "(require 'package)" >>"$siteStart"
|
|
|
|
# Set paths for the dependencies of the requested packages. These paths are
|
|
# searched before the profile paths, but after the explicitly-required paths.
|
|
for pkg in $requires; do
|
|
# The explicitly-required packages are also in the list, but we will add
|
|
# those paths last.
|
|
if ! ( echo "$explicitRequires" | grep "$pkg" >/dev/null ) ; then
|
|
addToEmacsPaths $pkg
|
|
fi
|
|
done
|
|
|
|
# Finally, add paths for all the explicitly-required packages. These paths
|
|
# will be searched first.
|
|
for pkg in $explicitRequires; do
|
|
addToEmacsPaths $pkg
|
|
done
|
|
|
|
# Byte-compiling improves start-up time only slightly, but costs nothing.
|
|
emacs --batch -f batch-byte-compile "$siteStart"
|
|
|
|
mkdir -p $out/bin
|
|
# Wrap emacs and friends so they find our site-start.el before the original.
|
|
for prog in $emacs/bin/*; do # */
|
|
makeWrapper "$prog" $out/bin/$(basename "$prog") \
|
|
--suffix EMACSLOADPATH ":" "$out/share/emacs/site-lisp:"
|
|
done
|
|
'';
|
|
inherit (emacs) meta;
|
|
}
|