With this release, we're providing deeper integration with our new proto toolchain manager, better Docker support, and new query commands for debugging.
Full proto toolchain integration
Earlier this week we announced proto, our own toolchain manager, and an attempt at a next generation version manager for multiple languages. proto was originally moon's toolchain layer, but we felt it best to extract it out into a stand-alone tool for everyone to use, especially those not using moon!
Now that proto has been released, we've updated moon's Rust internals to utilize proto's latest Rust
crates. For the most part, everything will continue to work the same. However, the biggest change is
that the toolchain has moved from
~/.proto, and will result in tools being
re-downloaded and installed. Feel free to delete the old
~/.moon directory manually.
Furthermore, we've added first-class support for the new
configuration file. If this file is found in the workspace root, we'll automatically enable the
tools in our toolchain, and inject the versions (when not defined in
node = "18.0.0"
pnpm = "7.29.0"
moon docker setup command
moon has provided built-in
Dockerfile support since v0.15 (11 versions
ago!) and we've always encouraged the use of the
moon setup command to
setup the toolchain and install project dependencies. Here's an example of a moon powered
# Install moon binary
RUN npm install -g @moonrepo/cli
# Copy workspace skeleton
COPY ./.moon/docker/workspace .
# Install toolchain and dependencies
RUN moon setup
# Copy source files
COPY ./.moon/docker/sources .
# Build something
RUN moon run app:build
# Prune workspace
RUN moon docker prune
CMD ["moon", "run", "app:start"]
However, over the course of these 11 releases since v0.15, we refactored the
moon setup command to
only setup the toolchain, and no longer install project dependencies. We inadvertently broke our
Docker integration. This was an oversight on our part.
To rectify this situation, we're introducing a new
moon docker setup command that will efficiently install
dependencies for projects focused/affected within the
Dockerfile. This is a much better solution
than before, and you should see improved Docker layer caching!
-RUN moon setup
+RUN moon docker setup
moon query hash command
When moon runs a task, we generate a unique hash representing the state of that run. When something
goes wrong however, and the hash is different than what you expect, debugging why is rather
non-trivial and requires a lot of internal knowledge. We're looking to reduce this burden, by
introducing the new
moon query hash command.
$ moon query hash 0b55b234
This command will print the contents of the hash manifest, which is all inputs and sources used to generate the unique hash. From here you can use this output to investigate what's actually happening.
moon query hash-diff command
Expanding on the new command above, we're also introducing the
moon query hash-diff command, which can be used to compute the
difference between 2 hashes. Perfect in understanding what has changed between ran tasks.
$ moon query hash-diff 0b55b234 2388552f
When ran, the command will print out the differences as highlighted lines. If you use
this will feel familiar to you.
View the official release for a full list of changes.
- A handful of critical bug fixes.
- Targets that generate an empty hash are now considered a failure, as they may be an edge case not accounted for.
Expect the following in the v1 release!
- Officially release a v1!
- Project tagging and constraints.