josh.nz
I’m starting to follow the book Engineering Elixir Applications, and immediately ran into an issue installing PostgreSQL 15.2 on macOS 15.4.1:
note: 'strchrnul' has been marked as being introduced in macOS 15.4 here, but the deployment target is macOS 15.0.0
Apparently this issue affects macOS 15.4.0+, and has been fixed in a PostgreSQL patch for versions 13-17, but that patch doesn’t seem out yet (at least for 15).
For now, I managed to install it by exporting the following line first, before the asdf install (page 9 of the book):
export MACOSX_DEPLOYMENT_TARGET="$(sw_vers -productVersion)"
Note that I’m using mise instead of asdf, but I believe the same issue will be present with asdf as mise just uses the asdf postgres plugin.
Details of the issue for anyone interested:
I originally found the pgenv solution, which linked to the above bug discussion:
https://github.com/theory/pgenv/issues/93
I hope this helps people.
Where Next?
Trending in Questions
Other Trending Topics
Latest on Elixir Forum
Sponsor Spotlight
Bringing learning, work and compliance together since 1987.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #blog-post
- #elixirconf-us
- #elixir-ls
- #ai
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #hex
- #security
- #metaprogramming
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Practical resources that improve the lives of professional developers.
Producing high quality Elixir screencasts since 2017.
**Building the future of software with AI, trust, and human connection.**
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 4- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
josh.nz
Apparently this issue affects macOS 15.4.0+, and has been fixed in a PostgreSQL patch for versions 13-17, but that patch doesn’t seem out yet (at least for 15).
For now, I managed to install it by exporting the following line first, before the
asdfinstall (page 9 of the book):aglassman
Just use docker compose. It’s so much easier to manage various projects that require different versions of services like postgres, mysql, redis, etc.
Schultzer
Thanks, this helped me out when I had to setup a new company laptop!
josh.nz
This might be a better solution long term but a) I’m not overly familiar with Docker (which is partly why I’m reading this book), and b) I was trying to follow the book as close as possible.
There’s always a tension when following technical books; if you deviate too far, you might run into issues you need to diagnose yourself and that might be challenging depending on the nature of the issue and your experience level. At the same time, books can date fast, so you might run into similar issues when following the book directly anyway. Since this book is relatively new, I expected minimal to no issues following the book directly, but the recent macOS update obviously had an impact.