The Curious Engineer

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Jappie Journal

jappie.me

Technical blog by Jappie Klooster. Haskell, Nix, functional programming, and software engineering.

HaskellDev tools / editors / IDEsMobile / iOS / AndroidSoftware / engineering practice

’16’17’18’19’20’21’22’23’24’25’26
Posts
78 from 24 Dec 2016 to 22 Aug 2026
Posting
monthly (12 in the last year)
Kind
personal blog
Feed
https://jappieklooster.nl/atom

2026 12

  1. Correlation implies cashation.
  2. Black swan
  3. Hidden rewards
  4. Even with an edge, you lose?
  5. Musings on Le darkness
  6. Hatter: Native Haskell mobile apps
  7. Announcement: HSMin - more AI-friendly Haskell code!
  8. Announcement: unwitch
  9. Announcement: memory / ram fork
  10. Haskell 💜 Vibes
  11. Haskell 💜 Vibes
  12. Announcement: Esqueleto postgis v4

2025 3

  1. Death💀 to type classes
  2. Private repository flake input
  3. Stacked against us

2024 5

  1. Firmware lemons 🍋
  2. Analyzing Haskell stability
  3. Cabal exact printing
  4. Announcement: Updated Esqueleto text-search & PostGIS bindings
  5. Lessons from creating a vacation rental.

2023 11

  1. Follow Up on the Follow-Up
  2. BONUS Announcement mysql pure unfork
  3. Announcing mysql pure fork
  4. Follow up release rodeo
  5. MySQL Persistent Support for Haskell on Windows
  6. The Release Rodeo
  7. About my startup: raster.click
  8. Restoring msyql backup system on windows.
  9. The peculiar event sourced deadlock
  10. Summerhouse Paradis Aruba
  11. Why do I still write this blog?

2022 4

  1. Zurich hack 2022 Denotational Design
  2. Restoring mysql innodb on windows.
  3. Failing in Haskell
  4. Installing a NixOS desktop tracked with git

2021 2

  1. A brief intro to MTL
  2. The Nix mutli-monolith machine (NMMM).

2020 2

  1. Using git for templates
  2. Hacking atom

2019 6

  1. Ghcid for multi package projects
  2. Pinning nixops builds
  3. Reflex server side html rendering
  4. Nixos notes
  5. Citrix XenCenter 7.6 notes
  6. Authentication in Reflex & Servant

2018 14

  1. Lens into wrapped newtypes
  2. Fullstack Haskell: Reflex and Servant
  3. Back to the Netherlands!
  4. Terug naar Nederland!
  5. NixOS on encrypted btrfs
  6. Pragmatic Haskell III: Beam Postgres DB
  7. Pragmatic Haskell II: IO Webservant
  8. Pragmatic Haskell: Simple servant web server
  9. Elm on fire! Shaders in elm
  10. Fun with stack: Haskell dependency management
  11. Reddit poster plugin for pelican
  12. Starting at Daisee
  13. Flask, docker and the backend
  14. New new website style changes

2017 15

  1. Plan prediction
  2. Jakartian Christmas
  3. Jappie lives with kangaroos
  4. Work work work, ya ya ya
  5. What do you think about jakarta
  6. Beginning of eternal summer
  7. Journey to Oceania
  8. My thesis
  9. Website changes
  10. Endorsement
  11. Making money with foss
  12. Tool survey
  13. Comparing tax in different countries
  14. Optimus time!
  15. Thesis writing tips

2016 4

  1. Deployment and todo's
  2. Website Launch
  3. Second post
  4. First post