unisonweb/unison

Built-ins to get and set file permissions

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#2,790 建立於 2022年1月10日

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feature: new builtinhelp wanted

描述

It is currently not possible to query or modify the permissions of a file or directory from Unison. Support for these functions would need a native implementation.

My use-case: In dhall-unison I'd like to check if the cache directories are readable and writeable. As a "workaround" I always attempt to read/write files and handle errors appropriately

See also this discussion on Slack https://unisonlanguage.slack.com/archives/CLUNF0J5S/p1641645307009800

貢獻者指南

技術棧
無
領域
backenddeveloper experience
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
over 1 week
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Unison knowledgeHaskell experience
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
20
研究方向
Explore existing native built in implementations in the Unison codebase to understand the pattern. Look at how similar file system functions are implemented. Review the Slack discussion for additional context on requirements. The implementation will likely involve adding new primitives in the runtime (Haskell) and exposing them in the Unison standard library.