Commit graph

23 commits

Author SHA1 Message Date
Eelco Dolstra
7f893b7a43 * Allow derivations to hint that they should not be built remotely
using the build hook mechanism, by setting the derivation attribute
  "preferLocalBuild" to true.  This has a few use cases:

  - The user environment builder.  Since it just creates a bunch of
    symlinks without much computation, there is no reason to do it
    remotely.  In fact, doing it remotely requires the entire closure
    of the user environment to be copied to the remote machine, which
    is extremely wasteful.

  - `fetchurl'.  Performing the download on a remote machine and then
    copying it to the local machine involves twice as much network
    traffic as performing the download locally, and doesn't save any
    CPU cycles on the local machine.
2010-08-04 12:13:58 +00:00
Eelco Dolstra
83dfa89870 * Sync with the trunk. 2010-05-07 14:46:47 +00:00
Ludovic Courtès
4750065ada buildenv: Special-case Python's site.py' and site.pyc'.
* corepkgs/buildenv/builder.pl.in (createLinks): Skip `site.py' and
  `site.pyc' files.
2010-05-05 20:46:41 +00:00
Ludovic Courtès
4bab25a28d buildenv: Special-case Python's `easy-install.pth' files.
* corepkgs/buildenv/builder.pl.in (createLinks): Skip `easy-install.pth'
  files.  Comment the hack.
2010-05-03 13:13:38 +00:00
Eelco Dolstra
fe2d869e04 * Store user environment manifests as a Nix expression in
$out/manifest.nix rather than as an ATerm.

  (Hm, I thought I committed this two days ago...)
2010-04-21 15:08:58 +00:00
Eelco Dolstra
30beeb27a9 * Set the right priorities when recovering from a directory
collision.
2007-05-02 19:38:02 +00:00
Eelco Dolstra
a46db5d013 * Package conflict resolution through priority levels. If there is a
user environment collission between two packages due to overlapping
  file names, then a package with a higher priority will overwrite the
  symlinks of a package with a lower priority.  E.g.,

    $ nix-env --set-flag priority 5 gcc
    $ nix-env --set-flag priority 10 binutils

  gives gcc a higher priority than binutils (higher number = lower
  priority).
2007-04-27 23:28:44 +00:00
Eelco Dolstra
3d05166086 * Allow conflicting packages to be kept in a user environment, and
allow switching between them (NIX-80).

  Example: two versions of Pan:

    $ nix-env -q pan
    pan-0.128
    pan-0.14.2.91

    $ readlink $(which pan)
    /nix/store/l38jrbilw269drpjkx7kinhrxj6fjh59-pan-0.14.2.91/bin/pan

  At most one of them can be active any given time.  Assuming than
  0.14.2.91 is active, you can active 0.128 as follows:

    $ nix-env --set-flag active false pan-0.14.2.91
    $ nix-env --set-flag active true pan-0.128

    $ readlink $(which pan)
    /nix/store/nziqwnlzy7xl385kglxhg75pfl5i936n-pan-0.128/bin/pan

  More flags to follow.
2007-04-27 22:40:59 +00:00
Eelco Dolstra
5ca45d085e * Use "propagated-user-env-packages", not "propagated-build-inputs"
for packages that should be propagated to the user environment.
2006-09-25 15:11:59 +00:00
Eelco Dolstra
02f2335712 * Propagated packages now have lower priority; they are symlinked
*after* the packages that have been explicitly installed, and
  collisions are ignored.
2006-09-25 15:07:45 +00:00
Eelco Dolstra
561a07f51d * Revert unintentional commit. 2006-08-22 13:18:51 +00:00
Eelco Dolstra
18e4ac0fc6 * `nix-instantiate --{eval|parse}-only --xml': print an XML
representation instead of an ATerm.
* Indent XML output.
2006-08-16 10:32:30 +00:00
Eelco Dolstra
b5988004d6 * Support for srcdir != builddir (NIX-41). 2006-05-12 11:47:45 +00:00
Eelco Dolstra
3fae65d4cc * Adhockery. 2005-07-22 20:37:39 +00:00
Eelco Dolstra
543d7a41dc * Automatically add propagated build inputs to user environments.
Maybe this is a bad idea.
2005-03-07 13:27:56 +00:00
Eelco Dolstra
37d7abd694 * New language feature: with expressions.
The expression `with E1; E2' evaluates to E2 with all bindings in
  the attribute set E1 substituted.  E.g.,

    with {x = 123;}; x

  evaluates to 123.  That is, the attribute set E1 is in scope in E2.

  This is particularly useful when importing files containing lots
  definitions.  E.g., instead of

    let {
      inherit (import ./foo.nix) a b c d e f;

      body = ... a ... f ...;
    }

  we can now say

    with import ./foo.nix;

    ... a ... f ...

  I.e., we don't have to say what variables should be brought into scope.
2004-10-25 16:54:56 +00:00
Niels Janssen
995d08208e * prevent collision on log directory 2004-09-19 15:53:37 +00:00
Eelco Dolstra
2be8ac48bb * Make the creation of user environments much faster and more storage
efficient by creating only a single symlink to entire directory
  trees unless a collission occurs.
2004-04-06 11:42:28 +00:00
Eelco Dolstra
beda10f5a2 * Make perl a dependency of Nix. 2004-03-15 15:23:53 +00:00
Eelco Dolstra
6d46e647ba * Fixed the old envpkgs filename. 2004-02-04 16:20:51 +00:00
Eelco Dolstra
94175e978a * RPM spec file.
* Respect DESTDIR variable.
2003-12-30 20:09:00 +00:00
Eelco Dolstra
af7e6fe22e * Don't use a hard-coded path. 2003-11-22 21:12:36 +00:00
Eelco Dolstra
9898746ef3 * nix-env: a tool to manage user environments.
* Replace all directory reading code by a generic readDirectory()
  function.
2003-11-19 17:27:16 +00:00