[error] install error when git submodule cloning

[stardiviner]

Here is the output

Submodule 'doc/eldomain' (git://github.com/tkf/sphinx-eldomain.git) registered for path 'doc/eldomain'
Submodule 'lib/auto-complete' (git://github.com/auto-complete/auto-complete.git) registered for path 'lib/auto-complete'
Submodule 'lib/ert' (git://github.com/ohler/ert.git) registered for path 'lib/ert'
Submodule 'lib/fuzzy' (git://github.com/auto-complete/fuzzy-el.git) registered for path 'lib/fuzzy'
Submodule 'lib/markdown-mode' (git://jblevins.org/git/markdown-mode.git) registered for path 'lib/markdown-mode'
Submodule 'lib/nxhtml' (git://github.com/emacsmirror/nxhtml.git) registered for path 'lib/nxhtml'
Submodule 'lib/popup' (git://github.com/auto-complete/popup-el.git) registered for path 'lib/popup'
Submodule 'lib/pos-tip' (git://github.com/emacsmirror/pos-tip.git) registered for path 'lib/pos-tip'
Submodule 'lib/python' (git://github.com/fgallina/python.el.git) registered for path 'lib/python'
Submodule 'lib/request' (git://github.com/tkf/emacs-request) registered for path 'lib/request'
Submodule 'lib/smartrep' (git://github.com/myuhe/smartrep.el.git) registered for path 'lib/smartrep'
Submodule 'lib/websocket' (git://github.com/ahyatt/emacs-websocket.git) registered for path 'lib/websocket'
Submodule 'tests/mocker' (https://github.com/sigma/mocker.el.git) registered for path 'tests/mocker'
Cloning into 'doc/eldomain'...
Submodule path 'doc/eldomain': checked out '523f8d52b41cba43f21b43718123947eea438f77'
Cloning into 'lib/auto-complete'...
Submodule path 'lib/auto-complete': checked out '03ac7481c2073146cc8e31a0bce7aea35151ea63'
Cloning into 'lib/ert'...
Submodule path 'lib/ert': checked out '00aef6e43d44c6f25323d1a7bdfdc929a3b4ce04'
Cloning into 'lib/fuzzy'...
Submodule path 'lib/fuzzy': checked out 'b47d801d4e1ff67323eda4d602e78c31fbc5a08a'
Cloning into 'lib/markdown-mode'...
Submodule path 'lib/markdown-mode': checked out 'c3f86536a33ae30263cb7dccd049758939e45082'
Cloning into 'lib/nxhtml'...
fatal: read error: Connection timed out
fatal: early EOF
fatal: index-pack failed
Clone of 'git://github.com/emacsmirror/nxhtml.git' into submodule path 'lib/nxhtml' failed

I tried four times, same error on the same submodule update everytime.

[millejoh]

This sounds more like a git/github/network problem and not ein. Have you tried calling git clone git://github.com/emacsmirror/nxhtml.git from the command line? Does calling git clone https://github.com/emacsmirror/nxhtml do anything different?

Note that the github repository for nxthml is almost 40MB and takes me a little under a minute to download.

Also note that this version of ein only work with IPython versions 1.x and earlier. If you need support for current IPython (2.x or 3.x) you should download from MELPA or clone https://github.com/millejoh/emacs-ipython-notebook.