<commit_before>---
title: Release 0.43
short-description: Release notes for 0.43 (preliminary)
...

# Portability improvements to Boost Dependency

The Boost dependency has been improved to better detect the various ways to
install boost on multiple platforms. At the same time the `modules` semantics
for the dependency has been changed. Previously it was allowed to specify
header directories as `modules` but it wasn't required. Now, modules are only
used to specify libraries that require linking.

This is a breaking change and the fix is to remove all modules that aren't
found.<commit_msg>Release notes for 0.43 are no longer preliminary<commit_after>---
title: Release 0.43
short-description: Release notes for 0.43
...

# Portability improvements to Boost Dependency

The Boost dependency has been improved to better detect the various ways to
install boost on multiple platforms. At the same time the `modules` semantics
for the dependency has been changed. Previously it was allowed to specify
header directories as `modules` but it wasn't required. Now, modules are only
used to specify libraries that require linking.

This is a breaking change and the fix is to remove all modules that aren't
found.
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