Work on nobe4

When Go user.Lookup fails

Thu, 11 Jun 2026 00:00:00 +0000

A Docker base image bump turned into a multi-day debug of Go’s os/user package, NSS, SSSD, LDAP and GLIBC ABI. Here is what happened and what I learned.

Throughout this post, alice is an admin account with a hardcoded entry in /etc/passwd, and bob is a regular user who only exists in the central LDAP directory. All details of /bin/client are fictitious for the purpose of this post.

How it started: GLIBC errors

After deploying a routine docker update, users started seeing errors:

Shallow clone lies

Sat, 30 May 2026 00:00:00 +0000

A GitHub CI script at work checks who last edited a config file. If the author isn’t the expected one, the build fails. Good guardrail, until it started lying.

The script reported the wrong author: someone who never touched the file. The check failed, even though the right person had made the last edit.

The setup

The CI workflow uses actions/checkout with the default settings, then checks who last edited a config file:

Stars

Thu, 23 Jan 2025 00:00:00 +0000

Being idealistic is hard for me to brush off. I overly enjoy perfection and the feeling of having created something just right.

Having guidelines, or rules matters only if consistently applied. Code fits greatly to this via linter, type checkers, formatters, etc.

For other things, I find it useful to have guiding principles, less as strong rules and more as unreachable states. Aiming, if never reaching, for something perfectly great.

208 Energy

Tue, 30 Jun 2015 00:00:00 +0000

Scroll all the way down !

For the release of the new Peugeot 208, we developed at Cogit Studio a single scrolling webpage to beautifully present the car.

Feel the energy (website down)

308 Experience

Sun, 22 Mar 2015 00:00:00 +0000

Scroll all the way down !

For the release of the new Peugeot 308, we developed at Cogit Studio a single scrolling webpage to beautifully present the car.

Live the Experience (website down)

The Ad Filter

Sun, 15 Mar 2015 00:00:00 +0000

The Ad Filter is a Chrome and Firefox extension that only shows the “best” ads.

This work was done with Cogit Studio and D&AD.