If you use chezmoi_modify_manager together with chezmoi, there is one annoying bootstrap problem: chezmoi_modify_manager is needed while chezmoi apply computes file contents but the usual .chezmoiscripts/run_before_* hooks run too late to install it for the first apply I wanted a solution that was: automatic shell-based version-pinned rerun only when the installer script changes This post […]
My SWTBot UI tests recently started failing on GitHub Actions macOS runners. The application under test is an Eclipse-based application, so at first I expected the failure to be caused by some SWTBot timing issue, focus issue, or maybe a regression in my own code. However, the screenshot captured by the failed test showed something […]
Sometimes a command installed with Homebrew needs to be executed as root. A good example is nethogs, which needs elevated privileges to inspect network traffic. The problem is that this often fails:
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sudo nethogs |
even though this works:
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nethogs |
The reason is that sudo usually runs with a different, restricted PATH. Your normal shell can find […]
When I bootstrap a new machine with chezmoi, I usually start by cloning my dotfiles repo from GitHub over HTTPS:
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chezmoi init https://github.com/username/dotfiles.git |
That works well for the very first setup, because my SSH keys are not installed yet. After the first chezmoi apply, though, my SSH keys are finally in place, and I want the dotfiles […]
When setting up Sway as your Wayland compositor, you might want to organize your Waybar configuration in a non-standard location — for example, keeping a dedicated ~/.config/waybar/sway/ directory to separate your Sway-specific bar configuration from others. This seemingly simple task comes with a couple of subtle pitfalls worth knowing about. The ~ Expansion Problem The […]
If you use KDE and Sway (or Hyprland) on the same machine with the same user (something I’m experimenting with), when you launch Chrome and log in with your user in KDE, and then switch to Sway, you’ll see that your account is marked as “Paused”: you have to log in again. The same holds […]
How to prevent JDT LS (via m2e) from adding generated-sources APT folders and org.eclipse.jdt.apt prefs to an Eclipse+Maven project in VS Code. If you open a Maven Java project in Visual Studio Code that also contains Eclipse project metadata (.project, .classpath, .settings/…), you might notice that VS Code’s Java tooling (JDT Language Server) “helpfully” edits […]
This is the style I use to highlight my Java code in LaTeX documents with the Listings package, with Eclipse colors:
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% Colors for code highlighting according to the Eclipse default theme \definecolor{keywordColor}{rgb}{0.5, 0, 0.33} \definecolor{commentColor}{rgb}{0.25, 0.5, 0.35} \definecolor{stringColor}{rgb}{0.16, 0, 1} \definecolor{numberColor}{rgb}{0, 0, 0} % Color style \lstdefinestyle{mystyle}{ flexiblecolumns=true, keepspaces=true, tabsize=4, showstringspaces=false, basewidth={0em,0em},, numbers=left, basicstyle=\scriptsize, numberstyle=\color{numberColor}, commentstyle=\color{commentColor}\itshape, stringstyle=\color{stringColor}\ttfamily, keywordstyle=\color{keywordColor}\bfseries, } |
And this is an example of a document, where I show the same listing both with black and white colors an Eclipse colors:
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\documentclass{article} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} % not needed on XeLaTeX/LuaLaTeX \usepackage{xcolor} \usepackage{listings} % Colors for code highlighting according to the Eclipse default theme \definecolor{keywordColor}{rgb}{0.5, 0, 0.33} \definecolor{commentColor}{rgb}{0.25, 0.5, 0.35} \definecolor{stringColor}{rgb}{0.16, 0, 1} \definecolor{numberColor}{rgb}{0, 0, 0} % Color style \lstdefinestyle{mystyle}{ flexiblecolumns=true, keepspaces=true, tabsize=4, showstringspaces=false, basewidth={0em,0em},, numbers=left, basicstyle=\scriptsize, numberstyle=\color{numberColor}, commentstyle=\color{commentColor}\itshape, stringstyle=\color{stringColor}\ttfamily, keywordstyle=\color{keywordColor}\bfseries, } % Black and white style \lstdefinestyle{mystylebw}{ flexiblecolumns=true, keepspaces=true, tabsize=4, showstringspaces=false, basewidth={0em,0em},, numbers=left, basicstyle=\scriptsize, commentstyle=\itshape, stringstyle=\ttfamily, } \begin{document} \section*{Demo} With the default black and white style: \begin{lstlisting}[language=Java,style=mystylebw] // A simple Java program class Demo { public static void main(String[] args) { System.out.println("Hello, world!"); } } \end{lstlisting} \noindent With the color style: \begin{lstlisting}[language=Java,style=mystyle] // A simple Java program class Demo { public static void main(String[] args) { System.out.println("Hello, world!"); } } \end{lstlisting} \end{document} |
Here’s the result:
Remembering every Sway shortcut is tough. I wrote a small script that parses your Sway config, displays all bindsym shortcuts in a clean, searchable list via Rofi, and executes the command associated with whichever one you select. It’s fast, keyboard-friendly, and great for discovery: “What did I bind to Mod + Shift + P again?” Now you […]
If you use the LaTeX listings package to typeset Java, you’ve probably noticed that modern Java has moved faster than the package itself. Records, var, and text blocks may not highlight correctly out of the box. The good news: the listings package is extensible so that you can teach it “modern Java” with a tiny […]
If you’ve installed Linux on your MacBook Air, you’ve probably discovered that while most hardware works out of the box, the built-in FaceTime HD camera is notably absent from your video applications. Don’t worry—you’re not alone, and there’s a solution that doesn’t involve external USB webcams or complicated workarounds. The issue stems from Apple’s use […]
I have already blogged about managing KDE dotfiles with chezmoi and chezmoi_modify_manager. But what about maintaining them? For example, one of the KDE configuration files changes, and you want to update the version managed by chezmoi. Here’s an example where the Kate configuration file changed on the system and chezmoi detects that:
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❯ chezmoi status MM .config/katerc |
You can […]
I know there are many blog posts about configuring Tmux to support true color and italics in Alacritty, but many of them miss a crucial detail that breaks Neovim’s diagnostic undercurl (wavy underlines). Many of them suggest overriding the TERM variable in Alacritty to xterm-256color, which causes Neovim to lose the ability to display undercurl […]
Zram, https://www.kernel.org/doc/html/latest/admin-guide/blockdev/zram.html, is a Linux kernel module that creates a compressed block device in RAM. This device can be used as swap space or a general-purpose RAM disk. By compressing data in memory, zram allows your system to store more data in RAM, reducing the need to swap to slower disk storage and improving overall […]
I like Nerd Fonts a lot, and blogged about those in the past. If you spend a lot of time in the terminal, you’ve probably heard of them: they patch popular programming fonts with a huge set of icons, making your terminal and development environment look great and more informative. Here’s how you can easily […]
If you use Lazygit as your terminal Git UI, you know how convenient it is for staging, committing, and managing branches. I use it in Neovim (LazyVim already configures it). Integrating a custom pager (Lazygit Custom Pagers Documentation) can dramatically improve how diffs are displayed. In this blog post, I’ll document how to use delta: […]
When working with Maven projects, the Surefire plugin is commonly used to execute tests, but it lacks a built-in feature to display the total execution time across all test suites. This can be particularly important when monitoring performance trends in larger projects with many test classes. Maven’s Surefire plugin reports execution time for individual test […]
I’m going to show you how to use Neovim on Gitpod. This can be useful for checking and testing your Neovim configuration. The example can be found here: https://github.com/LorenzoBettini/neovim-gitpod-example. I’m using a LazyVim distribution as a demonstration. The Gitpod custom Dockerfile, “.gitpod.Dockerfile”, must be tweaked to install Neovim and its requirements (especially for using Lazyvim):
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# You can find the new timestamped tags here: https://hub.docker.com/r/gitpod/workspace-full/tags FROM gitpod/workspace-full:2025-04-16-08-49-20 # Install packages that are not in the Ubuntu repos # the version in Ubuntu repos is too old for lazy.vim # shellcheck is not available at all in Ubuntu repos RUN brew update RUN brew install \ neovim \ shellcheck # install-packages is a wrapper for `apt` that helps skip a few commands in the docker env. # additional packages needed in neovim with this configuration # (tree is just to inspect folders, not needed by neovim) RUN sudo install-packages \ fzf \ ripgrep \ stow \ npm \ tree |
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Using “pip” is the supported installation method for Ansible and Molecule. Let’s install Python libraries and applications (in this case, Ansible and Molecule) in a Python virtual environment. (This post is similar to the one about Ubuntu.) First, install the required packages, including the Python virtual environment package:
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sudo pacman -S python-pip python-virtualenv |
Create a virtual environment somewhere (in […]
The “remote” feature of flash.nvim is handy: it acts in “operator pending mode” to perform operations and then return to the original position. It took me some time to understand what it was doing, so I’m writing about it. I’m using it in the LazyVim distribution, which enables “flash” by default (and also “which-key”, which […]