xin/configs/emacs.nix

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{ runCommand
, emacsWithPackagesFromUsePackage
, pkgs
, lib
, makeWrapper
, mu
, writeTextDir
, emacs
, emacsPkg ? pkgs.emacsPgtkNativeComp
, ...
}:
let
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muDir = "${mu}/share/emacs/site-lisp/mu4e";
# Generate a .el file from our emacs.org.
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emacsConfig = runCommand "emacsConfig" { } ''
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mkdir -p $out
cp -v ${./emacs.org} $out/emacs.org
cd $out
${emacs}/bin/emacs --batch -Q -q \
--debug-init \
-l org emacs.org \
-f org-babel-tangle
if [ $? != 0 ]; then
echo "Generating failed!"
exit 1;
else
echo "Generated org config!"
fi
'';
# init.el to load my config and other dependencies.
emacsInit = writeTextDir "share/emacs/site-lisp/init.el" ''
(message "Loading my 'mu4e' from: ${muDir}")
(add-to-list 'load-path "${muDir}")
(load "${muDir}/mu4e.el")
(message "Loading my 'emacs.org' config from: ${emacsConfig}")
(load "${emacsConfig}/emacs.el")
'';
emacsInitDir = "${emacsInit}/share/emacs/site-lisp";
# Binaries that are needed in emacs
emacsDepList = with pkgs; [
go-font
graphviz
ispell
isync
mu
texlive.combined.scheme-full
];
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in
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emacsWithPackagesFromUsePackage {
config = ./emacs.org;
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alwaysEnsure = true;
alwaysTangle = true;
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package = emacsPkg.overrideAttrs (oa: {
nativeBuildInputs = oa.nativeBuildInputs ++ [ makeWrapper emacsConfig ];
postInstall = ''
${oa.postInstall}
wrapProgram $out/bin/emacs \
--prefix PATH : ${pkgs.lib.makeBinPath emacsDepList} \
--add-flags '--init-directory ${emacsInitDir}'
'';
});
}