Feel free to jump directly to the solution
I recently started working on node based project. I'd been using
nvm for quite
some time now, since I liked the idea of having languages their own version
managers, rather than having OS manage it ,which I doubt can do a good job. OS
package managers were designed to have single version (and upgrade when needed)
So I've been using
nvm for quite some time.
nvm adds a startup delay to the shell. For a normal interactive
shell, it doesn't matter since the shell once started lasts for weeks, if not
month(s) at a time. But for non-interactive shell, this poses a problem.
Since I had not “seriously” used node so far, it didn't matter much. I had
couple of lines in my
.zshrc since the time I installed
nvm and hadn't
thought about it a lot (or at all)
Now that I was working on node project, I wanted to use
tsserver as part of
tide setup with emacs.
tsserver requires to know the path
I had a “global” node version (on top of
nvm) - which was known to emacs
but that installation was abandoned and didn't have modules I used.
So I removed “system” version of
node completely. Now emacs couldn't find
node at all and
tsserver wouldn't start.
.zshrc is for interactive shell only, emacs does not find the
settings from it.
Based on suggestion of
doom emacs creator, I moved the configuration to
.zshenv and emacs found
tsserver started working.
zsh is known to be slow.
One of the reasons I switched to
doom emacs (from spacemacs) is because it is
fast But after the
.zshenv change, it became slow .. to start.
OK, I could live with that. Similar to the interactive
zsh - I don't start
emacs that often.
But there were other side effects. Opening
.py file started to take noticeable
time. There was other weird stuff going on as well.
I asked on doom-emacs’ discord channel about slow opening on
.py files. I'm
sure no one could have connected it to
nvm but I “some how” came to connect the
dots. (More of instinct, than logical reasoning)
So to eliminate the doubt, I commented out my
.zshenv and startup time
improved 400% (or reduced to 25% of the original, but 400% seems cooler. From 4+
seconds to 1+ second, if you care)
So now that I knew what was the problem, how do I fix it ? I definitely wanted
emacs to know the path to
doom-emac creator to the rescue. I modified his instructions a little
and here is what I have now.
nvmrelated config commented from
I've modified the Emacs as follows (This idea came from Henrik of doom emacs)
Now even when I start emacs from anywhere (i.e. not from Terminal) Emacs
nvm and picks up the correct
Since this executess only when starting the emacs binary, nothing else (like whatever takes place when opening python files) is affected.
I still get great startup time. (Cause the setup has taken place before emacs binary starts)
Bonus Tip 1
As far as interactive shell goes, I have following in my
.zshrc to take care of that.
Bonus Tip 2
In the process, I learned some more about
emacs - e.g. I
learned that equivalent of
which node (as run from the shell) for emacs is
M-: (executable-find "node")