Update cheatsheets

stack

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# stack
+
+> Manage Haskell projects.
+> More information: <https://github.com/commercialhaskell/stack>.
+
+- Create a new package:
+
+`stack new {{package}} {{template}}`
+
+- Compile a package:
+
+`stack build`
+
+- Run tests inside a package:
+
+`stack test`
+
+- Compile a project and re-compile every time a file changes:
+
+`stack build --file-watch`
+
+- Compile a project and execute a command after compilation:
+
+`stack build --exec "{{command}}"`
+
+- Run a program and pass an argument to it:
+
+`stack exec {{program}} -- {{argument}}`