Estou lendo as instruções no site conkeror (e em outros lugares) sobre como instalar o conkeror no Ubuntu (estou usando o Ubuntu 12_04 LTS) e parece que a sequência correta é:
sudo apt-add-repository ppa:xtaran/conkeror
sudo apt-get update
sudo apt-get install conkeror conkeror-spawn-process-helper
A primeira etapa (apt-add-repository) parece ser executada sem problemas, fornecendo a seguinte saída:
You are about to add the following PPA to your system:
Conkeror Debian packages for Ubuntu releases without xulrunner (i.e. for 11.04 Natty and later)
More info: https://launchpad.net/~xtaran/+archive/conkeror
Press [ENTER] to continue or ctrl-c to cancel adding it
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret- keyring /tmp/tmp.Re7pWaDEQF --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver hkp://keyserver.ubuntu.com:80/ --recv CB29CBE050EB1F371BAB6FE83BE0F86A6D689050
gpg: requesting key 6D689050 from hkp server keyserver.ubuntu.com
gpg: key 6D689050: "Launchpad PPA for Axel Beckert" not changed
gpg: Total number processed: 1
gpg: unchanged: 1
No entanto, a atualização do apt-get parece incapaz de buscar pacotes do PPA recém-adicionado, com sua saída terminando em:
Hit http://security.ubuntu.com precise-security/restricted Translation-en
Hit http://security.ubuntu.com precise-security/universe Translation-en
Err http://ppa.launchpad.net precise/main Sources
404 Not Found
Ign http://extras.ubuntu.com precise/main Translation-en_US
Err http://ppa.launchpad.net precise/main i386 Packages
404 Not Found
Ign http://extras.ubuntu.com precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
W: Failed to fetch http://ppa.launchpad.net/xtaran/conkeror/ubuntu/dists/precise /main/source/Sources 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/xtaran/conkeror/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
Assim, o apt-get-install conkeror falha com:
mperdikeas@mperdikeas:~$ sudo apt-get install conkeror
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package conkeror
Alguma idéia do que pode estar errado?