IDE Support
To support various IDEs and Language Servers, Mill supports the Build Server Protocol in version 2.0.0 and has a built-in BSP server.
In addition to BSP, Mill also supports IntelliJ IDEA project configuration generation directly.
Build Server Protocol (BSP)
To install a BSP connection file .bsp/mill-bsp.json, run:
mill mill.bsp.BSP/installWorking known clients of the BSP server are IntelliJ IDEA and Metals.
You can fine control some BSP server options by specifying command options:
Option |
Description |
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Use |
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Using Metals When using Metals by default Bloop will be used as your build server unless you explicitly choose Mill.
When in a Mill workspace use the "Switch Build Server" command from Metals which will allow you to switch to using Mill as your build
server.
If no Metals is relying on SemanticDB to enable many of its features. Mill BSP now also supports to provide this SemanticDB data, when the BSP client (like Metals) requests it. As of writing this, Metals 0.11.8 is the latest available version, which is not able to detect the fact, that Mill is already providing SemanticDB data. As a consequence, it reports missing SemanticDB data, although some SemanticDB-based features are already working. This may be fixed eventually in a future release of Metals. |
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Updating older setups In the past, we provided SemanticDB support via |