Spack 3.4 发布，Slackware下的软件包管理

Spack 是一个 Slackware Linux 和它的衍生品系统的独立软件包生成工具。提供一个简单清晰、安全灵活的制作软件包，减少代码工作量。

Changes: The spacktidy UI and code were revised and slightly improved, and the related documentation was fixed. Moreover, it can now perform case insensitive searches when the new "MATCHCASE" option is set to 0. The spackcook command's --recipe option was improved