Johbo's Notes - Working on the Web

I realized how tricky it can be to be in two different ecosystems while switching from Apple-based hardware to a Framework notebook running Linux.

Why the warning appears When a machine is reinstalled or an SSH service is rebuilt, its host key changes.

Rendering a presentation out of an Org file is a snap when working in Emacs.

Working on applications for a cloud deployment means that one typically will hit the need for setting up a few domain names for testing purposes.

When working with more complex setups for testing and developing one often needs a way to assign multiple domain names to locally running services.

This is the second part of setting up a local DNS server for testing and development purposes.

In order to work with a customized locally built image in a locally running Kubernetes cluster, the following approach did work out quite nice for an ad-hoc need.

Flashing an ISO image to an external drive like a USB stick or an SDCard is a common way to get up and running with a new system.

About Lead Dev Live I got across "Lead Dev" quite some time ago when a former colleague of mine did send me a link to a video from one session, think from the London based event.

About Sphinx is a documentation generator which is based on a plain text format for its sources.

Some Python packages need external dependencies in order to be able to call their setup.py in order to gather information about the package.

About NixOPS allows to deploy a network of machine configurations into various backends.

Minikube provides a local Kubernetes environment, typically based on a virtual machine which runs localkube.

NixOPS supports a few special attributes which are special attributes on the level of the whole network.

About NixCon 2017 was organized in Munich, happened in the amazing rooms of TNG.

About On my way to create a new NixOS module to run RhodeCode Enterprise CE I did arrive at a point where I wanted to be able to just test out the module quickly and build a machine image.

Today's plan Think I'll keep my focus around Python and Nix.

About A quick example about how to use the library function remove to adjust a package's dependencies based on a given condition.

About Quick note about the needed bits to get remote building for Nix into a working state on OSX.

Pre-Hackathon @night There is nothing to see here, just read on. 😍 Initial plan Did pick up on my ideas around how to make software development for Python based projects easier.

About a year ago I did write about how to use pg_restore to load a database dump.

About It's a raw export of the slides from a talk at PyConWEB about my approach of using Nix to get reproducible development environments.

About This post is an export of the original slides plus the speaker notes of a talk about NixOPS and its container backend.

Adjusting the Spacemacs configuration Enabling reveal.js support in the org layer: (org :variables org-enable-reveal-js-support t) Hitting SPC f e R will sync the latest configuration changes.

Short report about getting GPGSuite running so that it uses the GnuPG version which I did install with the package manage Nix.

A few weeks ago I did already post how to get a PostgreSQL service up and running in an ad-hoc way based on the properties which ~nix-shell~ does provide.

Recently I got a task to evaluate an existing software for technical fitness.

Based on the agenda view of Org mode it is possible to perform actions on a selection of headlines.

Reverting a commit - git revert Within this article I focus on the command git revert.

My focus I was mainly involved around tooling for Python based development with Nix.

Nix is the Package Manager of the NixOS project.

This post is about the good old way to follow websites and blogs: RSS feeds.

cURL is one of the HTTP related tools on the command line.

I am using node2nix for most of my projects by now for deployments as well as to provide the development environment.

My last post about using the package manager Nix to provide the development environment for Python based projects is about 6 months old: Using Nix for Python development.

I am using Spacemacs since more than 6 months now and I am still very happy about the switch.

The goal Recently I came across a need for a unique constraint which is only applied to a subset of the records in one table.

I've recently grabbed an old VM and tried to upgrade it straight from NixOS version 15.03 to version 16.09.

A custom canonical URL for one article I've recently contributed an article to a different blog.

When handcrafting a query based on SQLAlchemy I find it quite often very useful to inspect the resulting query, including the parameters being expanded.

Nearly every software shows some type of items in an ordered way.

Heroku Connect allows to connect your Salesforce Organization with a PostgreSQL database.

The goal: Compare two tables When switching from one source of geo data to a different source which provided the data in a more suitable structure I wanted to get an overview of how similar the result was.

Thoughts on how an integration of a CLI (command line interface) toolkit for the Pyramid web framework might look like and could be integrated into the configuration mechanisms of Pyramid itself.

About Heroku Connect is an add-on from Salesforce to sync data into a PostgreSQL database.

The setting Using Nix to manage development environments is a very good choice: It works cross language, it handles C dependencies quite nice, it works on MacOS and Linux in the same way and it provides a ton of nice extra features.

I am using the package manager Nix as a replacement for Homebrew on MacOS and also as my preferred package manager on Linux systems.

The Salesforce migration tool can be used to migrate data between different Salesforce Organizations.

Most web projects will need at some point a command line interface (CLI) for administrative purposes.

Every now and then I am in a need of a quick way to get an overview of the row count in a PostgreSQL database.