Gtk4 C File tree view

Summary The problem lies in creating a file tree view in Gtk4 using C, where the classic arrow to expand folders is missing, and double-clicking does not open them. The provided code attempts to create a tree model using GtkTreeListModel and GtkDirectoryList, but it does not correctly implement the expansion functionality. Root Cause The root … Read more

Poetry: set env POETRY_REPOSITORIES_*_URL with partial url from gitlab

Summary The issue at hand is related to Poetry, a Python package manager, and its behavior when setting environment variables for repository URLs. Specifically, the problem arises when using a partial URL for the POETRY_REPOSITORIES_GITLAB_URL environment variable. This can lead to authentication issues during the package installation process. Root Cause The root cause of this … Read more

Broken NVIDIA/CUDA install

Summary A CUDA/NVIDIA driver upgrade on Ubuntu 24.04 resulted in a dependency hell and a NVML version mismatch. The system entered a state where apt refused to operate due to broken package dependencies (libnvidia-compute vs libnvidia-cfg1), and the existing NVIDIA SMI tool failed with Failed to initialize NVML: Driver/library version mismatch. This typically occurs because … Read more

Error Command “dev” not found when running yarn run dev

Summary A developer encountered a “dev” not found error when executing yarn run dev in a Node.js project. The root cause was an incorrectly formatted command in the package.json file, specifically an invalid character that broke the script definition. This is a common configuration error in Yarn environments where syntax validation is stricter than older … Read more

How do I make an image change when hovering over a link in HTML with javascript?

Summary A production-grade implementation of hover-triggered image swapping requires robust event handling and correct DOM traversal. The original code fails because the onmouseover and onmouseout inline event handlers are likely not firing due to either a missing jQuery library (causing the $ reference to crash the script execution) or malformed HTML preventing the browser from … Read more

Failing to build application for Wayland with error “undefined reference to `zxdg_decoration_manager_v1_interface’ “

Summary The issue at hand is an undefined reference error to zxdg_decoration_manager_v1_interface when attempting to build an application for Wayland. This error occurs despite the presence of other properly bound interfaces, such as wl_compositor. The error is triggered by a specific line of code that checks for the zxdg_decoration_manager_v1_interface name. Root Cause The root cause … Read more

Azure consumption logic app unable to return device ID from crowdstrike and returns 401 “access denied, authorization failed” error

Summary The 401 unauthorized error indicates that while credentials are valid, they are not successfully authorizing requests to the CrowdStrike API. In Azure Logic Apps, this is typically caused by token caching or hostname resolution issues specific to the Logic App runtime environment. Root Cause The primary cause of this failure is the Logic App’s … Read more

Outbox pattern problem with postgresql in python

Summary A silent dependency failure occurred after a routine deployment where the PostgreSQL database container failed to properly initialize its data volume. The application’s outbox pattern consumer appeared to start correctly, executed its polling query, but failed to process events due to an underlying database authentication failure triggered by a corrupted or missing PostgreSQL cluster … Read more