Commit graph

16 commits

Author SHA1 Message Date
Eelco Dolstra
05bb644890 * Allow the resulting symlink of nix-build to be named, e.g.,
$ nix-build .../i686-linux.nix -A apacheHttpd -o apache
2006-03-14 16:35:01 +00:00
Eelco Dolstra
120f00c04f * More online help. 2006-03-03 14:25:07 +00:00
Eelco Dolstra
2d54312f87 * Rewrote nix-build in Perl, since sh is just too limited (turns out
that arrays are a bash extension, so it didn't work on FreeBSD).
  Also fixes NIX-8 (readlink(1) dependency).
2006-03-03 14:15:02 +00:00
Eelco Dolstra
982399bb14 * Enable the --attr in nix-build as well (and add -A as an alias).
Example:

    $ nix-build ./all-packages.nix -A xlibs.libX11

  So finally it's easy to perform a test build of a Nix expression!
2006-02-10 17:37:35 +00:00
Eelco Dolstra
a5ceb5bc0b * nix-build: default to `./default.nix' if no paths are specified.
So when using Nix as a build tool, you can just say `nix-build' and
  it will build the top-level derivation defined in `default.nix'.
2005-07-13 17:39:10 +00:00
Eelco Dolstra
9f6835c282 * Remove debug code. 2005-02-01 17:52:11 +00:00
Eelco Dolstra
630ae0c9d7 * nix-build: use an indirection scheme to make it easier for users to
get rid of GC roots.  Nix-build places a symlink `result' in the
  current directory.  Previously, removing that symlink would not
  remove the store path being linked to as a GC root.  Now, the GC
  root created by nix-build is actually a symlink in
  `/nix/var/nix/gcroots/auto' to `result'.  So if that symlink is
  removed the GC root automatically becomes invalid (since it can no
  longer be resolved).  The root itself is not automatically removed -
  the garbage collector should delete dangling roots.
2005-02-01 13:48:46 +00:00
Eelco Dolstra
dcc37c236c * nix-store, nix-instantiate: added an option `--add-root' to
immediately add the result as a permanent GC root.  This is the only
  way to prevent a race with the garbage collector.  For instance, the
  old style

    ln -s $(nix-store -r $(nix-instantiate foo.nix)) \
      /nix/var/nix/gcroots/result

  has two time windows in which the garbage collector can interfere
  (by GC'ing the derivation and the output, respectively).  On the
  other hand,

    nix-store --add-root /nix/var/nix/gcroots/result -r \
      $(nix-instantiate --add-root /nix/var/nix/gcroots/drv \
        foo.nix)

  is safe.

* nix-build: use `--add-root' to prevent GC races.
2005-02-01 12:36:25 +00:00
Eelco Dolstra
c505702265 * Fix and simplify the garbage collector (it's still not concurrent,
though).  In particular it's now much easier to register a GC root.
  Just place a symlink to whatever store path it is that you want to
  keep in /nix/var/nix/gcroots.
2005-01-27 15:21:29 +00:00
Eelco Dolstra
9ee88bb2f2 * Use absolute paths. 2005-01-14 13:50:00 +00:00
Eelco Dolstra
3d1b2101cc * Place manifests in /nix/var/nix/manifests.
* Use the new patch downloader.
2004-12-20 16:38:50 +00:00
Eelco Dolstra
2aa1f4717b * Fix File exists' errors if the result' symlink exists but is
dangling.
2004-10-31 12:01:16 +00:00
Eelco Dolstra
937ce0cd21 * Flag `--no-link' suppresses symlinking to the output path.
* Handle multiple derivations correctly.
2004-08-18 12:11:31 +00:00
Eelco Dolstra
e8a95108c0 * Nix-build places a symlink `result' in the current directory to the
store object just built.
2004-07-28 13:32:45 +00:00
Eelco Dolstra
d051cd40e1 * Nix-instantiate can return multiple store expressions. 2004-06-22 15:17:04 +00:00
Eelco Dolstra
3093af58a7 * A utility script `nix-build' that builds Nix expressions and prints
their output paths (and only that) on standard output.
2004-06-22 15:12:34 +00:00