tvl-depot/.envrc

export BRIEFCASE=~/briefcase
export DEPOT=~/depot
export NIXPKGS=$HOME/nixpkgs
export DESKTOP=zeno.lon.corp.google.com
export LAPTOP=seneca
export CLOUDTOP=wpcarro.c.googlers.com
NIX_PATH=nixpkgs=$NIXPKGS:depot=$DEPOT:briefcase=$BRIEFCASE
Rename dotfiles -> briefcase Renaming my mono-repo briefcase. I first introduced this commit in master, but it introduced a bug where one of two things would happen: 1. Emacs wouldn't start and would crash X. 2. Emacs would start but my keyboard wouldn't work. I learned some valuable debugging skills in the process. Here are some of them: When my keyboard was broken, I wanted to control my computer using my laptop. Thankfully this is possible by using `x2x`, which forward X events from the SSH client to the SSH host. ```shell > # I'm unsure if this is the exact command > ssh -X desktop x2x -west :0.0 ``` Git commit-local bisecting. I didn't need to do a `git bisect` because I knew which commit introduced the bug; it was HEAD, master. But -- as you can see from the size of this commit -- there are many changes involved. I wanted to binary search through the changes, so I did the following workflow using `magit`: - git reset --soft HEAD^ - git stash 1/2 of the files changed - re-run `nix-env -f ~/briefcase/emacs -i` - restart X session - If the problem persists, the bug exists in the non-stashed files. Repeat the process until you find the bug. In my case, the bug was pretty benign. Calling `(exwm/switch "Dotfiles")` at the bottom of `window-manager.el` was failing because "Dotfiles" is the name of a non-existent workspace; it should've been `(exwm/switch "Briefcase")`. There may have been more problems. I changed a few other things along the way, including exposing the env vars BRIEFCASE to `wpcarros-emacs` inside of `emacs/default.nix`. The important part is that this was a valuable learning opportunity, and I'm glad that I'm walking away from the two days of "lost productivity" feeling actually productive. 2020-01-31 16:27:48 +01:00			`export BRIEFCASE=~/briefcase`
			`export DEPOT=~/depot`
			`export NIXPKGS=$HOME/nixpkgs`
Support env vars for {DESK,LAP,CLOUD}TOP devices I recently changed my hostname for my desktop and laptop from wpcarro.lon.corp.google.com -> zeno.lon.corp.google.com wpcarro2 -> seneca If you're curious, the names Zeno and Seneca come from famous Stoic philosophers. As you can see from this commit, my configuration depends on the values of these hostnames. Immediately impacted: - .profile - device.el Not immediately impacted: - configs/install - configs/uninstall - .ssh/config - .zshrc* * As a side note, I should stop supporting ZSH. Using an .envrc file helps me DRY up some of my configuration. Ideally I should only need to make changes to the .envrc file and then expect everything to work as expected. Let's see how that goes. 2020-01-29 13:38:19 +01:00			`export DESKTOP=zeno.lon.corp.google.com`
			`export LAPTOP=seneca`
			`export CLOUDTOP=wpcarro.c.googlers.com`
Rename dotfiles -> briefcase Renaming my mono-repo briefcase. I first introduced this commit in master, but it introduced a bug where one of two things would happen: 1. Emacs wouldn't start and would crash X. 2. Emacs would start but my keyboard wouldn't work. I learned some valuable debugging skills in the process. Here are some of them: When my keyboard was broken, I wanted to control my computer using my laptop. Thankfully this is possible by using `x2x`, which forward X events from the SSH client to the SSH host. ```shell > # I'm unsure if this is the exact command > ssh -X desktop x2x -west :0.0 ``` Git commit-local bisecting. I didn't need to do a `git bisect` because I knew which commit introduced the bug; it was HEAD, master. But -- as you can see from the size of this commit -- there are many changes involved. I wanted to binary search through the changes, so I did the following workflow using `magit`: - git reset --soft HEAD^ - git stash 1/2 of the files changed - re-run `nix-env -f ~/briefcase/emacs -i` - restart X session - If the problem persists, the bug exists in the non-stashed files. Repeat the process until you find the bug. In my case, the bug was pretty benign. Calling `(exwm/switch "Dotfiles")` at the bottom of `window-manager.el` was failing because "Dotfiles" is the name of a non-existent workspace; it should've been `(exwm/switch "Briefcase")`. There may have been more problems. I changed a few other things along the way, including exposing the env vars BRIEFCASE to `wpcarros-emacs` inside of `emacs/default.nix`. The important part is that this was a valuable learning opportunity, and I'm glad that I'm walking away from the two days of "lost productivity" feeling actually productive. 2020-01-31 16:27:48 +01:00			`NIX_PATH=nixpkgs=$NIXPKGS:depot=$DEPOT:briefcase=$BRIEFCASE`