diff options
Diffstat (limited to 'doc/manual/src/release-notes/rl-0.8.md')
| -rw-r--r-- | doc/manual/src/release-notes/rl-0.8.md | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/doc/manual/src/release-notes/rl-0.8.md b/doc/manual/src/release-notes/rl-0.8.md index 626c0c92b..5ba6e0e72 100644 --- a/doc/manual/src/release-notes/rl-0.8.md +++ b/doc/manual/src/release-notes/rl-0.8.md @@ -39,29 +39,29 @@ Nix 0.8 has the following improvements: notion of “closure store expressions” is gone (and so is the notion of “successors”); the file system references of a store path are now just stored in the database. - + For instance, given any store path, you can query its closure: - + $ nix-store -qR $(which firefox) ... lots of paths ... - + Also, Nix now remembers for each store path the derivation that built it (the “deriver”): - + $ nix-store -qR $(which firefox) /nix/store/4b0jx7vq80l9aqcnkszxhymsf1ffa5jd-firefox-1.0.1.drv - + So to see the build-time dependencies, you can do - + $ nix-store -qR $(nix-store -qd $(which firefox)) - + or, in a nicer format: - + $ nix-store -q --tree $(nix-store -qd $(which firefox)) - + File system references are also stored in reverse. For instance, you can query all paths that directly or indirectly use a certain Glibc: - + $ nix-store -q --referrers-closure \ /nix/store/8lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4 @@ -92,28 +92,28 @@ Nix 0.8 has the following improvements: - `nix-channel` has new operations `--list` and `--remove`. - New ways of installing components into user environments: - + - Copy from another user environment: - + $ nix-env -i --from-profile .../other-profile firefox - + - Install a store derivation directly (bypassing the Nix expression language entirely): - + $ nix-env -i /nix/store/z58v41v21xd3...-aterm-2.3.1.drv - + (This is used to implement `nix-install-package`, which is therefore immune to evolution in the Nix expression language.) - + - Install an already built store path directly: - + $ nix-env -i /nix/store/hsyj5pbn0d9i...-aterm-2.3.1 - + - Install the result of a Nix expression specified as a command-line argument: - + $ nix-env -f .../i686-linux.nix -i -E 'x: x.firefoxWrapper' - + The difference with the normal installation mode is that `-E` does not use the `name` attributes of derivations. Therefore, this can be used to disambiguate multiple derivations with the @@ -127,7 +127,7 @@ Nix 0.8 has the following improvements: - Implemented a concurrent garbage collector. It is now always safe to run the garbage collector, even if other Nix operations are happening simultaneously. - + However, there can still be GC races if you use `nix-instantiate` and `nix-store --realise` directly to build things. To prevent races, use the @@ -147,13 +147,13 @@ Nix 0.8 has the following improvements: - The behaviour of the garbage collector can be changed globally by setting options in `/nix/etc/nix/nix.conf`. - + - `gc-keep-derivations` specifies whether deriver links should be followed when searching for live paths. - + - `gc-keep-outputs` specifies whether outputs of derivations should be followed when searching for live paths. - + - `env-keep-derivations` specifies whether user environments should store the paths of derivations when they are added (thus keeping the derivations alive). |