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content/how-to-configure-a-cabal-project-for-profiling/index.md

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+title = "How to configure a Cabal project for profiling"
+date = 2024-11-27
+[taxonomies]
+authors = ["Hécate"]
+categories = ["Cabal"]
+tags = ["Performance", "Profiling"]
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+
+The [Cabal Manual][Cabal Manual] now has a guide on how to analyse the performance of Haskell applications.
+
+<!-- more -->
+
+This guide was contributed very generously by Malte Neuss. It describes the various options you can set in your `cabal.project` file in order to get a time or space profile of your application.
+
+## Project Configuration Guide
+
+It is the recommended entry point for newcomers into the world of Haskell performance analysis.
+As you progress through it, you will be pointed to other resources like the [Profiling section of the GHC Users Guide][GHC] and the [Haskell Optimization Handbook][HsOpt],
+which present you with more in-depth techniques and configuration options.
+
+You will moreover be shown how to produce time and space profiles that can be rendered and analysed with third-party tools like [Speedscope](https://speedscope.app).
+
+<img src=./speedscope.png />
+
+You can read it there: <https://cabal.readthedocs.io/en/latest/how-to-analyze-haskell-code-performance.html>.
+
+## Contribute to the documentation
+
+The manual follows the [documentation best practices](@/documentation-best-practices-in-2024/index.md) of the Haddock team, and the Cabal team is eager to receive more contributions to improve the life
+of our users. Do not hesitate to open a pull request at <https://github.com/haskell/cabal>.
+
+
+[Cabal Manual]: https://cabal.readthedocs.io/en/latest/
+[GHC]: https://downloads.haskell.org/ghc/latest/docs/users_guide/profiling.html
+[HsOpt]: https://haskell.foundation/hs-opt-handbook.github.io/