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Substrate Node Template Release Process

This release process has to be run in a github checkout Substrate directory with your work committed into

https://github.com/paritytech/polkadot-sdk/, because the build script will check the existence of your current git commit ID in the remote repository.

Assume you are in root directory of Substrate. Run:

cd scripts/ci/ ./node-template-release.sh <output tar.gz file>

Expand the output tar gzipped file and replace files in current Substrate Node Template by running the following

command.

# This is where the tar.gz file uncompressed cd substrate-node-template # rsync with force copying. Note the
slash at the destination directory is important rsync -avh * <destination node-template directory>/ # For dry-running
add `-n` argument # rsync -avhn * <destination node-template directory>/

The above command only copies existing files from the source to the destination, but does not delete files/directories that are removed from the source. So you need to manually check and remove them in the destination.

There is a Cargo.toml file in the root directory. Inside, dependencies are listed form and linked to a certain git

commit in Substrate remote repository, such as:

toml sp-core = { version = "7.0.0", git = "https://github.com/paritytech/substrate.git", rev =
"de80d0107336a9c7a2efdc0199015e4d67fcbdb5", default-features = false }

e will update each of them to link to the Rust crate registry. After confirming the versioned package is published in the crate, the above will become:

[workspace.dependencies] sp-core = { version = "7.0.0", default-features = false }

P.S: This step can be automated if we update node-template-release package in scripts/ci/node-template-release.

Once the Cargo.toml is updated, compile and confirm that the Node Template builds. Then commit the changes to a new

branch in Substrate Node Template, and make a PR.

Note that there is a chance the code in Substrate Node Template works with the linked Substrate git commit but not with published packages due to the latest (as yet) unpublished features. In this case, rollback that section of the Node Template to its previous version to ensure the Node Template builds.

Once the PR is merged, tag the merged commit in master branch with the version number vX.Y.Z+A (e.g. v3.0.0+1)

The X(major), Y(minor), and Z(patch) version number should follow Substrate release version. The last digit is any significant fixes made in the Substrate Node Template apart from Substrate. When the Substrate version is updated, this digit is reset to 0.

Troubleshooting

  • Running the script ./node-template-release.sh <output tar.gz file>, after all tests passed successfully, seeing the following error message:
thread 'main' panicked at 'Creates output file: Os { code: 2, kind: NotFound, message: "No such file or directory"
}', src/main.rs:250:10 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

This is likely due to that your output path is not a valid tar.gz filename or you don't have write permission to the destination. Try with a simple output path such as ~/node-tpl.tar.gz.