cblavier
Hi,
I’m in the process of upgrading from Elixir 1.17.x to Elixir 1.19.x. I’ve noticed that running mix loadpaths now compiles the entire application (including dependencies and application code), rather than just the dependencies. I observe the same behavior with mix deps.compile.
In our CI pipeline, it’s important to compile dependencies and application code separately to enable efficient layer caching.
Is this a regression in Elixir 1.19.x? Is there an alternative approach to achieve this separation with the new version?
Thank you for your help!
Where Next?
Trending in Questions
Other Trending Topics
Latest on Elixir Forum
Sponsor Spotlight
Build Elixir applications with speed and confidence.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #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
- #ai
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #blog-post
- #elixirconf-us
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #elixirconf-eu
- #api
- #forms
- #security
- #performance
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Practical resources that improve the lives of professional developers.
Master modern tools, write cleaner code, and tackle real-world challenges.
The deployment platform built for Elixir: PaaS ease, VPS control.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 8 to 1- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
josevalim
Gah! Apparently my phone sneaked in some weird Unicode dash! Thanks!
lud
(I fixed the post if someone reads José’s post)
cblavier
ChatGPT to the rescue
The error is caused by the command you’re running:
mix deps.compile –-skip-umbrella-childrenNotice the double dashes before skip-umbrella-children. The error message:
** (Mix) Unknown dependency –-skip-umbrella-children for environment devProblem:
You’re using the wrong type of dash before skip-umbrella-children.
You have
–-skip-umbrella-children(an en dash –plus hyphen -), when it should be --skip-umbrella-children(two standard hyphens).This often happens when copying from formatted text editors that substitute double hyphens with a long dash.
josevalim
Which Elixir version are you at?
mix deps.compile --skip-umbrella-childrenworked fine for me locally, both at the umbrella root and inside a child project.cblavier
@josevalim Am I missing something?
josevalim
mix deps.compile --skip-umbrella-childrenshould do the trick.cblavier
Ok, I never realized it was because we’re also using an umbrella app.
Anyway, I still need a solution to prevent my CI from recompiling all my deps whenever a source file changes
NobbZ
I never used
mix loadpaths, though I am under the impression, thatmix deps.compilealways compiled all “children” under the umbrella, though with “plain singular” apps I never observed the described behaviour.I do not have a testbed for non-umbrella apps currently.
PS: Just checked, with 1.18, all apps under the umbrella are built when using
mix deps.compile.