CD/CI, cargo plugins, compilation

src/tools/cargo_plugins.md

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+# Cargo Plugins
+
+[Cargo-hack]( https://github.com/taiki-e/cargo-hack )
+
+[cargo-machete]( https://github.com/bnjbvr/cargo-machete )
+
+[cargo-make]( https://github.com/sagiegurari/cargo-make )

src/tools/cd_ci.md

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+# Continuous Deployment / Continuous Integration
+
+[Continuous Integration (cargo book)]( https://doc.rust-lang.org/cargo/guide/continuous-integration.html )
+
+## GitHub Actions
+
+[install-action]( https://github.com/taiki-e/install-action ) is a GitHub Action for installing development tools (mainly from GitHub Releases).
+
+```yaml
+- uses: taiki-e/install-action@v2
+  with:
+    tool: cargo-binstall,just,mdbook,mdbook-lintcheck
+```
+
+## See also
+
+[Optimizing CI/CD pipelines in your Rust projects]( https://blog.logrocket.com/optimizing-ci-cd-pipelines-rust-projects/ )

src/tools/improve_speed.md

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+# Reduce compilation duration
+
+Rust compile times can be long.
+
+## Measuring build times
+
+```sh
+time cargo build
+```
+
+```sh
+cargo build --timings
+```
+
+## Dynamic linking
+
+```sh
+cargo install cargo-add-dynamic
+cargo add-dynamic polars --features csv-file,lazy,list,describe,rows,fmt,strings,temporal
+cargo build
+```
+
+[Speeding up incremental Rust compilation with dylibs]( https://robert.kra.hn/posts/2022-09-09-speeding-up-incremental-rust-compilation-with-dylibs/ )
+
+## Incremental Compilation
+
+From-scratch builds with incremental compilation enabled adds about 15–20% overhead compared to disabled. The initial build needs to write out more intermediate state in order for later incremental builds to take advantage of it.
+
+## Reference
+
+[8 Solutions for Troubleshooting Your Rust Build Times]( https://jondot.medium.com/8-steps-for-troubleshooting-your-rust-build-times-2ffc965fd13e )