如何强制lein deps重新获取本地jar / libs [英] How to force lein deps to re-fetch local jars/libs

问题描述

使用以下说明：

http://www.pgrs.net/2011/10/30/using-local-jars-with-leiningen/

我安装了一些本地jar到本地仓库。

当我想更新我的项目中的jar时，我重新安装jar到存储库，然后运行lein deps。我发现，不知何故，这个jar没有在我的项目中更新。即使我rm -rf libs文件夹中的所有内容，新的jar不被拾起。我唯一能够得到这个工作的方法是更改​​jar的名称。

这是奇怪的，因为即使我已经删除了旧jar的所有痕迹（据我所知），lein隐藏快照/缓存libs？

解决方案

leinigen将maven用于依赖关系mgmt。 maven默认存储它的仓库

  $ HOME / .m2 / repository 
  

在leiningen版本2之前，依赖项将被复制到< projecthome> / lib 版本2及更高版本构建了直接指向存储库的类路径。

因此，删除本地maven仓库中的jar，您应该强制（重新）下载。 >

或者，知道对于快照依赖关系，maven只会每天检查一次快照的新版本（默认情况下）。 在maven中，你可以强制使用-U标志。我不认为leiningen暴露，但你可以做... 。 （但看到barry-wark的回答）

 ＃在开始复制之前强制更新快照
 $ lein -U repl 
  

using the following instructions:

http://www.pgrs.net/2011/10/30/using-local-jars-with-leiningen/

I installed some local jars into local repository.

When I want to update the jar in my project, I re-install the jar into the repository and then run lein deps. I am finding that somehow, the jar is not updated in my project. Even when I rm -rf everything in the libs folder, the new jar is not picked up. The only way I have been able to get this to work is to change the name of the jar.

Its sort of odd because this occurs even when I have deleted all traces of the old jar (as far as I know) -- does lein hide a snapshot/cache of libs?

解决方案

leinigen uses maven for dependency mgmt. maven by default stores it's repo in

$HOME/.m2/repository

Prior to leiningen version 2, the dependencies would be copied to <projecthome>/lib, but version 2 and later builds a classpath pointing directly to the repository.

So delete the jar in your local maven repo and you should force a (re)download.

alternatively, it's useful to know that for snapshot dependencies, maven will only check for new versions of the snapshot once a day (by default). In maven you can force it using the -U flag. I don't think leiningen expose that, but you could do.... (but see answer from barry-wark)

# force update of snapshots before starting repl
$ lein -U repl

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