DEV Community: Petros Amoiridis

How to update Phoenix

Petros Amoiridis — Tue, 26 Sep 2023 10:12:05 +0000

Run the following:

mix local.phx

Configure Helix to use ElixirLS

Petros Amoiridis — Wed, 14 Jun 2023 10:14:19 +0000

My favorite editor is Zed, but I also like to have Helix configured for quick edits directly in the terminal.

Like Zed, Helix is written in Rust which makes it fast. Helix is a post modern text editor that runs inside the terminal. It uses the VIM philosophy, but changes a few things.

It comes pre-configured with a few things, like syntax highlighting. But it needs some work (minimal) to add things like a language server for your favorite language.

I use Elixir, so I want to configure ElixirLS to work with Helix.

Check if hx already knows where ElixirLS is

Configured language server: elixir-ls
Binary for language server: /path/to/elixir-ls/elixir-ls
Configured debug adapter: None
Highlight queries: ✓
Textobject queries: ✓
Indent queries: ✓

If it doesn't know about it (it will report it can't find the binary), or you want a very specific version of ElixirLS, download the latest release from GitHub.
Unzip the archive

Locate language-server.sh and rename it to elixir-ls

mv /path/to/language-server.sh /path/to/elixir-ls

Move the whole ElixirLS folder to a preferred path
Add the following to your .zshrc
```
export="/path/to/elixir-ls:$PATH"
```

Now if you run hx --health elixir it should be able to find the server. Helix expects elixir-ls to be in the PATH, that's why we needed to rename language-server.sh.

If you are looking for more information or ways to customize language servers, you can check Helix's documentation.

Git amend and reset author

Petros Amoiridis — Wed, 19 Apr 2023 18:01:52 +0000

You may have ended up with multiple wrong authors in your last commit. Sometimes, squashing or rebasing can do that. When the commit is the most recent one, it's as easy as:

git --amend --reset-author

That will open up the default editor and allow you to add more co-authors if needed. But if that's not what you want you can skip the editing with:

git --amend --reset-author --no-edit

Please note that this will get the author information from your global or local git config. If that's wrong, you may want to adjust it before you run the suggested command above.

Please also note, that this will need a force push if the branch is already published. Which means you need to talk to any other collaborators that also work on the same branch.

Simplest CLI pomodoro

Petros Amoiridis — Tue, 14 Mar 2023 10:25:15 +0000

Most pomodoro UI apps these days try to do too much. I am only interested in working for 25 minutes and resting for 5 minutes. And I don't want the interface to stay in the way.

I found Simple CLI Pomodoro timer for macOS | Patrick Loeber and I am capturing the installation and usage here for posterity.

Install

brew install caarlos0/tap/timer
brew install terminal-notifier

Then in your .zshrc add:

work() {
  # usage: work 10m, work 60s etc. Default is 25m
  timer "${1:-25m}" && terminal-notifier -message 'Pomodoro'\
        -title 'Work Timer is up! Take a Break 😊'\
        -sound Crystal
}

rest() {
  # usage: rest 10m, rest 60s etc. Default is 5m
  timer "${1:-5m}" && terminal-notifier -message 'Pomodoro'\
        -title 'Break is over! Get back to work 😬'\
        -sound Crystal
}

Access Cloud Drive from terminal

Petros Amoiridis — Fri, 03 Mar 2023 23:24:10 +0000

Here's an easy way to access Cloud Drive from your terminal through a symbolic link:

ln -s ~/Library/Mobile\ Documents/com~apple~CloudDocs iCloud

Now you can just do:

cd iCloud

Clean mix dependencies

Petros Amoiridis — Mon, 26 Sep 2022 13:56:37 +0000

Every once in a while, or when you have removed a dependency from your project, or you have run mix deps.update, it is a good practice to clean unused dependencies.

This is more to free disk space.

Here's how to do it:

mix deps.clean --unlock --unused

Run tests and stop on first failure

Petros Amoiridis — Mon, 26 Sep 2022 13:52:59 +0000

Here's how to run all tests in the same order as in the file and stop after the first failure:

mix test --seed 0 --max-failures 1

Run tests automatically on save

Petros Amoiridis — Mon, 26 Sep 2022 13:48:45 +0000

I was looking for a solution to run tests automatically every time I save any changes. The best way so far for me is the following hex package:

mix_test_watch

Install the dependency

# mix.exs (v1.13)
def deps do
  [
    {:mix_test_watch, "~> 1.0", only: :dev}
  ]
end

Configure it in your project

# config/config.exs
import Config

if config_env() == :dev do
  config :mix_test_watch,
    clear: true
end

The clear: true option means that the screen will clear every time tests run. This is useful because it is easier to scroll back to the top of the most recent test run.

Start watching for changes

In your terminal or within a VS Code terminal, this works great:

mix test.watch --seed 0 --max-failures 1 --include pending

Example

Here's an example of how this looks in VS Code:

Enjoy!

Installing Erlang Graphical Drawer

Petros Amoiridis — Tue, 13 Jul 2021 14:50:49 +0000

I was following an identicon generation tutorial using Elixir.

The project was a bit older and used egd as if it was available by default in the project.

erlang / egd

egd

Erlang Graphical Drawer

Erlang Graphical Drawer is an interface for 2d-image rendering and is used by Percept to generate dynamic graphs to its web pages. All code is pure erlang, no drivers needed.

Build

$ rebar3 compile

View on GitHub

I discovered egd is not part of the standard library anymore. One needs to install it separately in Elixir.

Step 1: Refresh rebar

mix local.rebar --force

Step 2: Add egd to the dependencies

defp deps do
  [
    {:egd, github: "erlang/egd"}
    # ...
  ]
end

Step 3: Install dependencies

mix deps.get

I hope that helps.