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Diffstat (limited to 'doc/manual/overview.xml')
| -rw-r--r-- | doc/manual/overview.xml | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/doc/manual/overview.xml b/doc/manual/overview.xml index a5bcccd343e3..e42c811c014c 100644 --- a/doc/manual/overview.xml +++ b/doc/manual/overview.xml @@ -189,30 +189,32 @@ obtaining list of Nix archives at http://catamaran.labs.cs.uu.nl/dist/nix/nixpkg it can be used immediately, that is, it now appears in a directory in the <envar>PATH</envar> environment variable. Specifically, <envar>PATH</envar> includes the entry - <filename><replaceable>prefix</replaceable>/var/nix/links/current/bin</filename>, + <filename><replaceable>prefix</replaceable>/var/nix/profiles/default/bin</filename>, where - <filename><replaceable>prefix</replaceable>/var/nix/links/current</filename> + <filename><replaceable>prefix</replaceable>/var/nix/profiles/default</filename> is just a symlink to the current user environment: </para> <screen> -$ ls -l /nix/var/nix/links/ +$ ls -l /nix/var/nix/profiles/ ... -lrwxrwxrwx 1 eelco ... 15 -> /nix/store/1871...12b0-user-environment -lrwxrwxrwx 1 eelco ... 16 -> /nix/store/59ba...df6b-user-environment -lrwxrwxrwx 1 eelco ... current -> /nix/var/nix/links/16</screen> +lrwxrwxrwx 1 eelco ... default-15-link -> /nix/store/1871...12b0-user-environment +lrwxrwxrwx 1 eelco ... default-16-link -> /nix/store/59ba...df6b-user-environment +lrwxrwxrwx 1 eelco ... default -> default-16-link</screen> <para> - That is, <filename>current</filename> in this example is a link to - <filename>16</filename>, which is the current user environment. Before - the installation, it pointed to <filename>15</filename>. Note that this - means that you can atomically roll-back to the previous user environment - by pointing the symlink <filename>current</filename> at - <filename>15</filename> again. This also shows that operations such as - installation are atomic in the Nix system: any arbitrarily complex - set of installation, uninstallation, or upgrade actions eventually boil - down to the single operation of pointing a symlink somewhere else (which - can be implemented atomically in Unix). + That is, <filename>default</filename> in this example is a link + to <filename>default-16-link</filename>, which is the current + user environment. Before the installation, it pointed to + <filename>default-15-link</filename>. Note that this means that + you can atomically roll-back to the previous user environment by + pointing the symlink <filename>default</filename> at + <filename>default-15-link</filename> again. This also shows + that operations such as installation are atomic in the Nix + system: any arbitrarily complex set of installation, + uninstallation, or upgrade actions eventually boil down to the + single operation of pointing a symlink somewhere else (which can + be implemented atomically in Unix). </para> <para> @@ -221,15 +223,15 @@ lrwxrwxrwx 1 eelco ... current -> /nix/var/nix/links/16</screen> </para> <screen> -$ ls -l /nix/var/nix/links/16/bin +$ ls -l /nix/var/nix/profiles/default-16-link/bin lrwxrwxrwx 1 eelco ... MozillaFirebird -> /nix/store/35f8...4ae6-MozillaFirebird-0.7/bin/MozillaFirebird lrwxrwxrwx 1 eelco ... svn -> /nix/store/3829...fb5d-subversion-0.32.1/bin/svn ...</screen> <para> Note that, e.g., <filename>svn</filename> = - <filename>/nix/var/nix/links/current/bin/svn</filename> = - <filename>/nix/var/nix/links/16/bin/svn</filename> = + <filename>/nix/var/nix/profiles/default/bin/svn</filename> = + <filename>/nix/var/nix/profiles/default-16-link/bin/svn</filename> = <filename>/nix/store/59ba...df6b-user-environment/bin/svn</filename> = <filename>/nix/store/3829...fb5d-subversion-0.32.1/bin/svn</filename>. </para> |