perl - 使用 Dist::Zilla 声明对特定版本的 Perl 模块的依赖关系

Question

我一直在工作项目中使用 Dist::Zilla，并且我已经在 [Prereqs / Requires] 中声明了我的所有依赖项。部分。到目前为止很好。

现在我发现我的一个依赖项的最新版本破坏了向后兼容性，所以我想限制我依赖的版本范围。类似于 cpanm支持:

# from perldoc cpanm
cpanm Plack~">= 1.0000, < 2.0000"  # latest of 1.xxxx
cpanm Plack@0.9990                 # specific version. same as Plack~"== 0.9990"

或 Module::Build :

'Other::Module' => '>= 1.2, != 1.5, < 2.0',

一般来说，我如何使用 Dist::Zilla 声明这种类型的依赖关系？

Answer 1

Dist::Zilla::Prereqs使用 CPAN::Meta::Spec 来做先决条件。该文档描述了 Version Ranges 中的语法。章节。

Some fields (prereq, optional_features) indicate the particularversion(s) of some other module that may be required as aprerequisite. This section details the Version Range type used toprovide this information.

The simplest format for a Version Range is just the version numberitself, e.g. 2.4. This means that at least version 2.4 must bepresent. To indicate that any version of a prerequisite is okay, evenif the prerequisite doesn't define a version at all, use the version0.

Alternatively, a version range may use the operators < (less than), <=(less than or equal), > (greater than), >= (greater than or equal), ==(equal), and != (not equal). For example, the specification < 2.0means that any version of the prerequisite less than 2.0 is suitable.

For more complicated situations, version specifications may be AND-edtogether using commas. The specification >= 1.2, != 1.5, < 2.0indicates a version that must be at least 1.2, less than 2.0, and notequal to 1.5.

所以你的先决条件会变成:

[Prereqs]
Plack = >= 1.0000, < 2.0000
Plack = == 0.9990
Other::Module = >= 1.2, != 1.5, < 2.0

注意单 =将模块名称(键)与版本或版本范围(值)分开。
这些版本意味着:

>= 1.0000, < 2.0000

大于或等于 1.0000 且小于 2.0000

== 0.9990

正是版本 0.9990

= 1.2, != 1.5, < 2.0

大于或等于 12 而不是 1.5 且小于 2.0

如您所见，这与 cpanfile 或 Module::Build 完全相同。