HTTP Proxies

If you are using Leiningen 2.x behind an HTTP proxy you need to set the http_proxy environment variable before launching Leiningen.

In Linux/Unix put this in ~/.profile:

http_proxy=http://username:password@proxy:port
https_proxy=http://username:password@proxy:port

Or in Windows:

http_proxy=http://username:password@proxy:port
https_proxy=http://username:password@proxy:port

Non-proxy hosts

To supply a list of hosts for which Lein should bypass the configured proxy, set the http_no_proxy environment variable:

http_no_proxy="*.example1.com|*.example2.com|*.example3.com"

Leiningen uses clj-http which is built on the Apache HttpComponents Client. This means that to set non-proxy hosts you're required to use the Java format, and Lein is unable to use the value/format found in the standard NO_PROXY environment variable.

---

For unexpected behaviours could be useful to check the get-proxy-settings function on http://github.com/technomancy/leiningen/blob/master/leiningen-core/src/leiningen/core/classpath.clj#L86