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I enjoyed using term-switcher so much that I ended up adopting vterm as my
primary terminal. After reaching for vterm as often as I did, I realized that I
would enjoy supporting cycling through instances, creating new instances,
deleting existing instances, renaming instances. Thus spawned vterm-mgt.el.
I'm particularly excited about the KBD to toggle between vterm instances and
source code buffers.
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Supporting these functions was a little tricky. For example, how should we
handle calling cycle/remove on the item that is currently focused? After
attempting to be clever, I decided to just set the value to nil and let the
consumer decide what is best for them. I can always support a more opinionated
version that fallsback to previous-index if previous-index is set. But until I
have a better idea of how I'm going to consume this, I think nil is the best
option.
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I oftentimes call `cycle/focus` and pass `(lambda (a) (equal a b))`. This
function should tighten up my code.
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Add predicate for determining if a cycle contains items.
Updated cycle/{new,from-list} to support setting current-index to nil when a
consumer calls it with an empty list.
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- generate_board: writing
- print_board: reading
- neighbords: reading
I'm working up to creating a function to initialize a game board where no three
adjacent cells either vertically or horizontally should be the same value.
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Recently I've been asked a few interview questions that involve reading from or
writing to a grid, matrix, game board, etc. I am not as fast as I'd like to be
at this, so I'm going practice.
Here I'm practicing reading from existing matrices. I should practice writing to
empty boards, reading neigboring cells, wrapping around the board (in the case
of Conway's Game of Life), and other useful practices.
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I've been using restclient.el and `restclient-mode` lately to test API calls,
and I'm enjoying. I think it might make sense to track these scratch files in
the repo. Who knows? They may serve as a form of documentation.
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Define transaction structs for both Monzo and YNAB. Each package has a `main`
function that runs some shallow but preliminary round-trip tests for the
serializers and decoders.
The fixtures.json file that each of them is referencing has been ignored in case
either contains confidential data of which I'm unaware.
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Define my YNAB personal access token as an environment variable. Prefix Monzo
environment variables with "monzo_" to more easily differentiate between Monzo
credentials and YNAB credentials.
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Whenever possible, prefer starting things as systemd units instead of
instantiating them in ~/.profile and other dotfiles.
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I removed most of the packages that I install with `nix-env`. You can view these
with `nix-env --query`. This is one small step in a grander project to migrate
entirely to a declarative config managed by Nix.
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This does two things:
1. Starts lorri daemon
2. Moves ssh-agent and docker daemon startup calls to ~/.profile
I'm still not entirely sure when ~/.profile is evaluated... I'd like to use
systemd to startup and manage these background services, but I currently don't
have a strong enough desire to do this.
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`stack path --local-doc-root` gets evaluated when I create a shell, which is not
what I intended.
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dkish was an idea to quickly create REPLs for all sorts of languages like
Haskell, Elixir, Clojure. I haven't used these, and if I started wanting these
with my newfound comfort with Nix, I think I'd reach for that instead.
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I'm in the midst of transitioning onto a few new tools.
My previous workflow just used `nix-env` to install *some* packages. I didn't
have a prescribed methodology for which packages I would install using `nix-env`
and which ones I would install using `sudo apt-get install`. Sometimes if a
package would be available in my aptitude repositories, I'd use that; other
times when it wasn't available I'd use `nix-env`. One complication about being
on gLinux intead of NixOS is that some packages (e.g. nixpkgs.terminator) is
available via `nix-env -iA nixpkgs.terminator`, but the installation won't
actually run on my gLinux. In these instances, I would install terminator from
the aptitude repositories.
Then @tazjin introduced me to his Emacs configuration that he builds using
Nix. What appealed to me about his built Emacs is that it worked as expected on
either a NixOS machine and on gLinux (and presumably on other non-NixOS machines
as well).
A setup towards which I'm working is to own one or a few NixOS machines whose
configurations are entirely managed with Nix. On devices like my work machines,
which cannot run NixOS, I can build as much of the software that I need using
Nix and attempt to minimize the ad hoc configuration either with shell scripts,
python, golang, or more Nix code... it's clear that I still don't have a clear
idea of how that part will work.
For now, I'm adopting nix, nix-env, lorri, direnv, and weening off of aptitude
as much as I can. Things are a bit messy, but my general trend feels
positive. Stay tuned for more updates.
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From what I currently understand, lorri is a tool (sponsored by Target) that
uses nix and direnv to build and switch between environments quickly and
easily.
When you run `lorri init` inside of a directory, lorri creates a shell.nix and
an .envrc file. The .envrc file calls `eval "$(lorri direnv)"` and the shell.nix
calls `<nixpkgs>.mkShell`, which creates a shell environment exposing
dependencies on $PATH and environment variables. lorri uses direnv to ensure
that $PATH and the environment variables are available depending on your CWD.
lorri becomes especially powerful because of Emacs's `direnv-mode`, which
ensures that Emacs buffers can access anything exposed by direnv as well.
I still need to learn more about how lorri works and how it will affect my
workflow, but I'm enjoying what I've seen thus far, and I'm optimistic about the
road ahead.
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actors.go is my attempt to better understand golang's channels. I'm mapping my
understanding of concurrency from my experience with Elixir / Erlang and actors
onto golang until I have more opinions.
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Since I did not pass my one-site interview with DM, but I have been invited to
attempt again, I decided to partition this directory into two parts:
1. part_one: Hosting the exercises that I completed before my first attempt at
earning the job.
2. part_two: Hosting the exercise that I will complete before my second attempt
at earning the job.
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My Emacs initialization fails for a few reasons, which I haven't prioritized
time to investigate yet:
- Some OCaml deps are absent
- godoc is absent
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After some toil and lots of learning, monzo_ynab is receiving access and refresh
tokens from Monzo. I can now use these tokens to fetch my transactions from the
past 24 hours and then forward them along to YNAB.
If YNAB's API requires OAuth 2.0 login flow for authorization, I should be able
to set that up in about an hour, which would be much faster than it took me to
setup the login flow for Monzo. Learning can be a powerful thing.
See the TODOs scattered around for a general idea of some (but not all) of the
work that remains.
TL;DR
- Package monzo_ynab with buildGo
- Move some utility functions to sibling packages
- Add a README with a project overview, installation instructions, and a brief
note about my ideas for deployment
Note: I have some outstanding questions about how to manage state in Go. Should
I use channels? Should I use a library? Are top-level variables enough? Answers
to some or all of these questions and more coming soon...
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I discovered direnv's convenient `source_up` function today. I needed it to
inherit the values defined in ~/briefcase/.envrc, and it's working exactly as I
expected it would. What a fine piece of software direnv is.
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I'm now pulling the authorization code off of Monzo's request to my redirect
URI. I intend to use exchange that code for an access and refresh token. Once I
have these two items, I should be able to interact with Monzo's API much more
easily.
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- Prefer goimports to gofmt. goimports calls gofmt; it also adds and removes
dependencies.
- Assert the presence of goimports, godoc, godef
- KBD godef to M-.
- Support the M-x compile command for calling `go build -v`
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Support a Mercurial alias for listing the files that have changed on a
particular branch.
This commit is particularly noisy because I reformatted the above aliases to
align with the new width.
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What's done:
- Basic support of the client authorization grant stage of the OAuth login
flow:
- Open Google Chrome to point the user to Monzo's client authorization page.
- Created a web server to retrieve the authorization code from Monzo.
What's left:
- Pulling the authorization grant (i.e. code) from Monzo's request and
exchanging it for an access token and a refresh token, which can be used to
make subsequent requests.
Unanswered question:
- Assuming this is a stateless app, where should I store the access token and
refresh token to avoid the authorization flow. I'd like to avoid the client
authorization flow because ideally I could run this app as a job that runs
periodically throughout the day without requiring my interactions with it.
Some interesting notes:
- Notice how in the .envrc file, it's possible to make calls to `pass`. This
allows me to check in the .envrc files without obscuring their content. It
also allows me to consume these values in my app by using
`os.Getenv("client_secret")`, which I find straightforward. Overall, I'm quite
pleased to have stumbled upon this pattern - assuming that it's secure.
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I mistakenly mapped one of my dual-function keys on my Ergodox to send Shift+CMD
instead of CMD. When some of my Emacs keybindings weren't firing, I noticed that
the key event they received was some like `C-S-s-<char>` instead of say
`C-s-<char>`. As a quick fix, I duplicated each of my keybindings that relied on
the CMD key to support Shift+CMD as well until I remapped the key on my
Ergodox. This morning, I remapped the Shift+CMD key to CMD, so I'm bidding adieu
to this code.
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Today I learned that you can email your Kindle files to read them using the
paperwhite display. I'm attempting to read RFCs, so after reading 1/4 of the way
through RFC6479 (on OAuth2.0), I realized that it might be easier to read on my
Kindle instead of on my computer screen. Out of this, rfcToKindle.go was born.
I'm not sure if I'd like to publish this or not.
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Support pasting and scrolling.
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Call `M-x` `nix/rebuild-emacs` to build and link `wpcarros-emacs`.
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Press `<M-escape.` to display a list of buffers hosting X applications. Use
`completing-read` to select and focus one of these.
See the function docs and TODOs for more information.
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I don't want vterm buffers or magit buffers showing up when I cycle throw
buffers.
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Currently, after I connect my monitor to my laptop, I run `display/enable-4k`,
which will use `xrandr` to enable the display. The scaling of the enabled
display is not what I expect. So I've habituated re-running the same function,
`display/enable-4k`, which scales the display and meets my expectations.
What's strange is that if instead of running `display/enable-4k` the first time
from Emacs, I call `xrandr ...` from a terminal, this enables the display and
scales it properly on the first invocation.
I'm unsure how to explain this behavior. It's possible that a environment
variable is set properly in the terminal that isn't set in my Emacs, but this is
just a guess.
I'm going to using a different invocation in display.el that explicitly passes
the monitors dimensions. Let's see if that works.
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To facilitate transitioning from using `terminator` to using `vterm`, I'm
defining some KBDs that I hope will help me habituate my usage of `vterm`.
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Quickly access strings that encode time is various formats. See the module docs
in timestring.el for more information.
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I'm currently quite unfamiliar with golang. As an exercise to help me onboard
onto golang, and as a proof-of-concept to see if golang is a viable substitute
for Python as a scripting language, I decided to port my delete_dotfile_symlinks
to golang.
In the process, renamed ./python -> ./scripts, which is a more accommodating
name for a directory.
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I decided to start writing go code for scripts instead of python. I think this
will be a learning opportunity for me and should increase the integrity of my
scripts by adding some static type checking.
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Adding a deploy.nix to output docker images based on the <briefcase>.blog
derivation. See the deploy/README.md docs for more information.
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Move the three injected dependencies into one.
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I think the name deploy is more representative of the purpose of this directory
since docker is just one of a few tools that I'm using to deploy software.
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Using index.html allows us to use the Google AdSense script and extend the
styling by adding a CSS stylesheet.
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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.
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Adding a simple script to help me manage the symlinks to the dotfiles
managed by my mono-repo.
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I'm using a Makefile until I can remember the command:
```shell
> nix-env -f . -i
```
This will install (i.e. `-i`) any derivations instantiated from the Nix
expression resolvable by `-f`. Ideally the incantation will look something like
this:
```shell
> nix-env -f '<universe>' -iA emacs
```
Informing `nix-env` to install all of the derivations created by the expression
at attribute `emacs` in my `<universe>` repository. For now two things are
preventing this:
1. `emacs` isn't an attribute in my top-level expression defined in the
`default.nix`.
2. If I do add `emacs` as an attribute and call the above command, my usage of
`readTree` results in `pkgs` missing `.lib` and a few other stdlib commands
that are available in `(import <nixpkgs> {})`.
A fix for both of these should be forthcoming.
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At the moment, all of the Nix repositories that I'm consuming exist in ~. To
keep things consistent, I ran:
```shell
> hub clone nixos/nixpkgs ~/nixpkgs
```
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Moving all of my Emacs-related files into their own directory at the root of
this repository.
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When I first moved to London, I created common.txt to store the address of my
office, my temporary housing, my new phone number, and other information. It
serverd its purpose, but I no longer need it anymore.
bookmarks.txt started out as a dmenu/rofi -> google-chrome integration. This
predates EXWM, which has replaced this with a google-chrome.el module (or
something similarly named).
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Manually merging:
- README.md: I added the description from universe/README.md into the heading of
dotfiles/README.md.
- .envrc: dotfiles/.envrc was a superset of universe/.envrc
- .gitignore: Adding some of the ignored patterns from universe/.gitignore to
dotfiles/.gitignore
Everything else here should be a simple rename.
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git-subtree-dir: universe
git-subtree-mainline: 15110e6de9f85537c7847267caa35fa068aea001
git-subtree-split: 8ad51b24dd8719840aac47134835ea25cfe1b0b8
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I've been using Fish consistently for about a month now, and I don't see myself
switching back to ZSH. Some of the code from this commit should be published. I
may get around to that one day. Before I did that, I would need to clean it up
and document it, which I won't be doing today.
Thank you, ZSH, for your service.
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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.
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