Hello Pierre,

Pierre Neidhardt <mail@ambrevar.xyz> 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