First, we need to prep the Rust repository. Check out Rust:
$ git clone https://github.com/rust-lang/rust
$ cd rust
Next, update the nightly version, and determine it's SHA1. This is simple with rustup:
rust$ rustup update nightly
rust$ rustup run nightly rustc --version
rustc 1.11.0-nightly (7746a334d 2016-05-28)
rust$ export RUST_SHA=7746a334d
Finally, checkout that version:
rust$ git checkout $RUST_SHA
Now that Rust is ready, get Syntex ready. First, check out Syntex:
rust$ cd ..
$ git clone https://github.com/serde-rs/syntex
$ cd syntex
Check out the rust branch, which tracks the upstream Rust libsyntax. Delete
the syntex source directories and replace them with the ones from upstream.
syntex$ git checkout rust
syntex$ rm -r syntex_syntax/src syntex_pos/src syntex_errors/src
syntex$ cp -r ../rust/src/libsyntax syntex_syntax/src
syntex$ cp -r ../rust/src/libsyntax_pos syntex_pos/src
syntex$ cp -r ../rust/src/librustc_errors syntex_errors/src
syntex$ git add .
syntex$ git commit -m "Sync with $(rustup run nightly rustc --version)"
Switch back to the master branch, merge it in, and resolve any conflicts:
syntex$ git checkout master
syntex$ git merge rust
# ... conflict resolution :-)
At this point, syntex will probably compile on Nightly, but not necessarily on
Stable. Check this by building the hello_world example:
syntex$ cd hello_world
syntex/hello_world$ rustup run stable cargo run
syntex/hello_world$ rustup run beta cargo run
syntex/hello_world$ rustup run nightly cargo run
Resolve any errors that come up. Once that's good, bump the version number, and
push up the rust and master branches for review. Once it lands and passes
the travis builds, tag it, then publish it:
syntex/hello_world$ cd ..
syntex$ GIT_COMMITTER_DATE="$(git show --format=%aD | head -1)" git tag -s -m "Release 0.14.0" v0.14.0
syntex$ git push origin --tags
syntex$ cd syntex_pos
syntex/syntex_pos$ cargo publish
syntex/syntex_pos$ cd ../syntex_errors
syntex/syntex_errors$ cargo publish
syntex/syntex_errors$ cd ../syntex_syntax
syntex/syntex_syntax$ cargo publish
syntex/syntex_syntax$ cd ../syntex
syntex/syntex$ cargo publish