[bug#38619] Byte compilation of Emacs autoloads

[Maxim Cournoyer]

Hello Pierre,

Pierre Neidhardt <address@hidden> writes:

I've now tested this change with the extensive manifest (attached).

I've built two profiles, like this:

(before change)
./pre-inst-env guix package -m emacs-pkg.txt -p /tmp/emacs-ref

(after change)
./pre-inst-env guix package -m emacs-pkg.txt -p /tmp/emacs-byte-compiled

Then proceeded to benchmark them like:

--8<---------------cut here---------------start------------->8---
env -i sh -c "source /tmp/emacs-ref/etc/profile && time emacs --batch --eval 
'()'"
--8<---------------cut here---------------end--------------->8---

Which returned:

--8<---------------cut here---------------start------------->8---
Loading 
/gnu/store/ipfaivbqjxfnda970w558vpihd84lqwi-profile/share/emacs/site-lisp/treepy-autoloads.el
 (source)...
Loading 
/gnu/store/ipfaivbqjxfnda970w558vpihd84lqwi-profile/share/emacs/site-lisp/ts-autoloads.el
 (source)...
Loading 
/gnu/store/ipfaivbqjxfnda970w558vpihd84lqwi-profile/share/emacs/site-lisp/tuareg-autoloads.el
 (source)...
Eager macro-expansion failure: (file-missing "Searching for program" "No such 
file or directory" "git")
Searching for program: No such file or directory, git

real    0m0.406s
user    0m0.361s
sys     0m0.044s
--8<---------------cut here---------------end--------------->8---

Now with the patches here:
--8<---------------cut here---------------start------------->8---
Loading 
/gnu/store/l09fascj5xjhbgi3nzc1bhrprdy44y9g-profile/share/emacs/site-lisp/treepy-autoloads...
Loading 
/gnu/store/l09fascj5xjhbgi3nzc1bhrprdy44y9g-profile/share/emacs/site-lisp/ts-autoloads...
Loading 
/gnu/store/l09fascj5xjhbgi3nzc1bhrprdy44y9g-profile/share/emacs/site-lisp/tuareg-autoloads.el
 (source)...
Eager macro-expansion failure: (file-missing "Searching for program" "No such 
file or directory" "git")
Searching for program: No such file or directory, git

real    0m0.287s
user    0m0.251s
sys     0m0.036s
--8<---------------cut here---------------end--------------->8---

That's a decent speedup :-)

I'll push this to master shortly.

Maxim

emacs-pkg.txt
Description: emacs packages manifest

0001-gnu-emacs-Byte-compile-the-site-lisp-directory.patch
Description: Text Data

0002-emacs-build-system-Byte-compile-the-autoload-files.patch
Description: Text Data

0003-gnu-emacs-Fix-comment.patch
Description: Text Data

0004-gnu-emacs-cl-generic-Disable-byte-compilation-of-its.patch
Description: Text Data

0005-gnu-emacs-sly-macrostep-Remove-the-enable-autoloads-.patch
Description: Text Data

0006-gnu-emacs-sly-quicklisp-Remove-the-enable-autoloads-.patch
Description: Text Data

0007-gnu-emacs-sly-named-readtables-Disable-byte-compilat.patch
Description: Text Data

signature.asc
Description: PGP signature