update nixos channel path

doc/manual/installation.xml

@@ -326,7 +326,7 @@ packages.</para>
 some reason this is not the case, just do
 
 <screen>
-$ nix-channel --add http://nixos.org/releases/nixos/channels/nixos-unstable
+$ nix-channel --add http://nixos.org/channels/nixos-unstable
 </screen>
 
 You can then upgrade NixOS to the latest version in the channel by

maintainers/scripts/ec2/create-ebs-amis.py

@@ -52,7 +52,7 @@ m.run_command("mkdir -p /mnt")
 m.run_command("mount {0} /mnt".format(device))
 m.run_command("touch /mnt/.ebs")
 m.run_command("mkdir -p /mnt/etc/nixos")
-m.run_command("nix-channel --add http://nixos.org/releases/nixos/channels/nixos-unstable")
+m.run_command("nix-channel --add http://nixos.org/channels/nixos-unstable")
 m.run_command("nix-channel --update")
 m.run_command("nixos-rebuild switch")
 version = m.run_command("nixos-version", capture_stdout=True).replace('"', '').rstrip()

modules/installer/cd-dvd/system-tarball-pc-readme.txt

@@ -80,7 +80,7 @@ had booted this nixos. Run:
 *  `grep local-cmds run/current-system/init`
 
 Then you can proceed normally subscribing to a nixos channel:
-  nix-channel --add http://nixos.org/releases/nixos/channels/nixos-unstable
+  nix-channel --add http://nixos.org/channels/nixos-unstable
   nix-channel --update
 
 Testing:

modules/programs/bash/profile.sh

@@ -87,7 +87,7 @@ fi
 
 # Subscribe the root user to the NixOS channel by default.
 if [ "$USER" = root -a ! -e $HOME/.nix-channels ]; then
-    echo "http://nixos.org/releases/nixos/channels/nixos-unstable nixos" > $HOME/.nix-channels
+    echo "http://nixos.org/channels/nixos-unstable nixos" > $HOME/.nix-channels
 fi
 
 # Create the per-user garbage collector roots directory.