{"action":"opened","issue":{"url":"https://api.github.com/repos/ethereum/pyethapp/issues/69","labels_url":"https://api.github.com/repos/ethereum/pyethapp/issues/69/labels{/name}","comments_url":"https://api.github.com/repos/ethereum/pyethapp/issues/69/comments","events_url":"https://api.github.com/repos/ethereum/pyethapp/issues/69/events","html_url":"https://github.com/ethereum/pyethapp/issues/69","id":113043177,"number":69,"title":"Documentation: Installation, c_secp256k1","user":{"login":"howardpmarks","id":13721565,"avatar_url":"https://avatars.githubusercontent.com/u/13721565?v=3","gravatar_id":"","url":"https://api.github.com/users/howardpmarks","html_url":"https://github.com/howardpmarks","followers_url":"https://api.github.com/users/howardpmarks/followers","following_url":"https://api.github.com/users/howardpmarks/following{/other_user}","gists_url":"https://api.github.com/users/howardpmarks/gists{/gist_id}","starred_url":"https://api.github.com/users/howardpmarks/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/howardpmarks/subscriptions","organizations_url":"https://api.github.com/users/howardpmarks/orgs","repos_url":"https://api.github.com/users/howardpmarks/repos","events_url":"https://api.github.com/users/howardpmarks/events{/privacy}","received_events_url":"https://api.github.com/users/howardpmarks/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-10-23T15:30:02Z","updated_at":"2015-10-23T15:30:02Z","closed_at":null,"body":"When using: `pyethapp run` I got the following warning:\r\n\r\n`UserWarning: could not import c_secp256k1, fallback to bitcointools\r\n  warnings.warn('could not import c_secp256k1, fallback to bitcointools')`\r\n\r\nTo fix it I had to install:\r\n// Download c_secp256k1\r\n$ git clone https://github.com/czepluch/pysecp256k1.git\r\n$ cd pysecp256k1\r\n\r\n// Dependencies for c_secp256k1\r\n$ sudo apt-get install libssl-dev\r\n$ sudo apt-get install libffi-dev\r\n$ sudo apt-get install libtool\r\n\r\n// Set-up c_secp256k1\r\n$ sudo python setup.py install"}}