Commit graph

93 commits

Author SHA1 Message Date
Eelco Dolstra 47f87072ad * A very dirty hack to make setuid installations a bit nicer to use.
Previously there was the problem that all files read by nix-env
  etc. should be reachable and readable by the Nix user.  So for
  instance building a Nix expression in your home directory meant that
  the home directory should have at least g+x or o+x permission so
  that the Nix user could reach the Nix expression.  Now we just
  switch back to the original user just prior to reading sources and
  the like.  The places where this happens are somewhat arbitrary,
  however.  Any scope that has a live SwitchToOriginalUser object in
  it is executed as the original user.

* Back out r1385.  setreuid() sets the saved uid to the new
  real/effective uid, which prevents us from switching back to the
  original uid.  setresuid() doesn't have this problem (although the
  manpage has a bug: specifying -1 for the saved uid doesn't leave it
  unchanged; an explicit value must be specified).
2004-09-09 21:12:53 +00:00
Eelco Dolstra 1eddee59f2 * The default verbosity level of all Nix commands is now lvlInfo.
* Builder output is written to standard error by default.
  * The option `-B' is gone.
  * The option `-Q' suppresses builder output.

The result of this is that most Nix invocations shouldn't need any
flags w.r.t. logging.
2004-08-18 12:19:06 +00:00
Eelco Dolstra 292d6468ec * Nix-env operations now by default filter out any derivations for
system types other than the current system.  I.e., `nix-env -i'
  won't install derivations for other system types, and `nix-env -q'
  won't show them.  The flag `--system-filter SYSTEM' can be used to
  override the system type used for filtering (but not for
  building!).  The value `*' can be used not to filter anything.
2004-07-01 13:56:56 +00:00
Eelco Dolstra 8f6254e823 * Align the columns in the output of `nix-env -q'. 2004-07-01 13:35:10 +00:00
Eelco Dolstra 593bc23d8b * Allow the system attribute of derivations to be queried in
`nix-env -q'.
* Queries can now be combined, e.g., `nix-env -q --status --system'.
2004-07-01 13:13:37 +00:00
Eelco Dolstra 151e61fa5a * By default, `nix-env -i' now deletes previously installed
derivations with names matching the derivations being installed.
  The option `--preserve-installed / -P' overrides this behaviour.
2004-06-28 14:40:26 +00:00
Eelco Dolstra 24286e15c9 * `nix-env -u' now allows a specific version to be specified when
upgrading.

  This fixes a bug reported by Martin:

    $ nix-env -i foo-1.0
    $ nix-env -u foo-1.0
    upgrading foo-1.0 to foo-1.1
2004-06-28 13:37:05 +00:00
Eelco Dolstra 91dc023665 * Added a switch `--fallback'. From the manual:
Whenever Nix attempts to realise a derivation for which a closure is
  already known, but this closure cannot be realised, fall back on
  normalising the derivation.

  The most common scenario in which this is useful is when we have
  registered substitutes in order to perform binary distribution from,
  say, a network repository.  If the repository is down, the
  realisation of the derivation will fail.  When this option is
  specified, Nix will build the derivation instead.  Thus, binary
  installation falls back on a source installation.  This option is
  not the default since it is generally not desirable for a transient
  failure in obtaining the substitutes to lead to a full build from
  source (with the related consumption of resources).
2004-06-28 10:42:57 +00:00
Eelco Dolstra 112ee89501 * Re-enable support for substitutes in the normaliser.
* A better substitute mechanism.

  Instead of generating a store expression for each store path for
  which we have a substitute, we can have a single store expression
  that builds a generic program that is invoked to build the desired
  store path, which is passed as an argument.

  This means that operations like `nix-pull' only produce O(1) files
  instead of O(N) files in the store when registering N substitutes.
  (It consumes O(N) database storage, of course, but that's not a
  performance problem).

* Added a test for the substitute mechanism.
  
* `nix-store --substitute' reads the substitutes from standard input,
  instead of from the command line.  This prevents us from running
  into the kernel's limit on command line length.
2004-06-20 19:17:54 +00:00
Eelco Dolstra 8c0b42f857 * An quick and dirty hack to support distributed builds. 2004-05-12 09:35:51 +00:00
Eelco Dolstra 8e459d919d * Recurse into attribute sets and lists when getting derivations from
an expression.
2004-04-21 09:37:37 +00:00
Eelco Dolstra 59b94ee18a * When something goes wrong in the evaluation of a Nix expression,
print a nice backtrace of the stack, rather than vomiting a gigantic
  (and useless) aterm on the screen.  Example:

    error: while evaluating file `.../pkgs/system/test.nix':
    while evaluating attribute `subversion' at `.../pkgs/system/all-packages-generic.nix', line 533:
    while evaluating function at `.../pkgs/applications/version-management/subversion/default.nix', line 1:
    assertion failed at `.../pkgs/applications/version-management/subversion/default.nix', line 13

  Since the Nix expression language is lazy, the trace may be
  misleading.  The purpose is to provide a hint as to the location of
  the problem.
2004-04-05 22:27:41 +00:00
Eelco Dolstra 00fe1a506f * When creating a new generation, also make the normal form of the
derivation (i.e., the closure store expression) a root of the
  garbage collector.  This ensures that running `nix-collect-garbage
  --no-successors' is safe.
2004-02-11 10:25:31 +00:00
Eelco Dolstra 6551b36790 * Print what generation we are switching to; honour --dry-run flag. 2004-02-10 13:42:58 +00:00
Eelco Dolstra 618aa69b01 * In --upgrade': added flags --lt', --leq', --always' to specify
whether we want to upgrade if the current version is less than the
  available version (default), when it is less or equal, or always.
  
* Added a flag `--dry-run' to show what would happen in `--install',
  `--uninstall', and `--upgrade', without actually performing the
  operation.
2004-02-09 11:59:39 +00:00
Eelco Dolstra 06a75a7e0c * A command `--switch-generation' to switch to a specific generation
of the current profile, e.g.,

    $ nix-env --list-generations
    ...
    39   2004-02-02 17:53:53
    40   2004-02-02 17:55:18
    41   2004-02-02 17:55:41
    42   2004-02-02 17:55:50   (current)

    $ nix-env --switch-generation 39

    $ ls -l /nix/var/nix/profiles/default
    ... default -> default-39-link

* Also a command `--rollback' which is just a convenience operation to
  rollback to the oldest generation younger than the current one.

  Note that generations properly form a tree.  E.g., if after
  switching to generation 39, we perform an installation action,
  a generation 43 is created which is a descendant of 39, not 42.  So
  a rollback from 43 ought to go back to 39.  This is not currently
  implemented; generations form a linear sequence.
2004-02-08 14:07:43 +00:00
Eelco Dolstra b8675aee54 * In `--list-generations', show what the current generation is. 2004-02-06 16:16:55 +00:00
Eelco Dolstra 73ab2ed4fd * A command `--list-generations' to show all generations for a
profile.
2004-02-06 16:03:27 +00:00
Eelco Dolstra 7c0fa4474f * More refactoring. 2004-02-06 14:57:10 +00:00
Eelco Dolstra 7abf9911d9 * Refactoring. 2004-02-06 14:49:41 +00:00
Eelco Dolstra 49bafe1faf * Use the profile pointed to by ~/.nix-profile if no --profile
argument is specified.
2004-02-06 10:59:06 +00:00
Eelco Dolstra 66e94d3275 * Improvements to profiles. Generations are now per-profile, e.g.,
default -> default-94-link
  default-82-link -> /nix/store/cc4480...
  default-83-link -> /nix/store/caeec8...
  ...
  default-94-link -> /nix/store/2896ca...
  experimental -> experimental-2-link
  experimental-1-link -> /nix/store/cc4480...
  experimental-2-link -> /nix/store/a3148f...

* `--profile' / `-p' -> `--switch-profile' / `-S'
* `--link' / `-l' -> `--profile' / `-p'
* The default profile is stored in $prefix/var/nix/profiles.
  $prefix/var/nix/links is gone.  Profiles can be stored anywhere.
* The current profile is now referenced from ~/.nix-profile, not
  ~/.nix-userenv.
* The roots to the garbage collector now have extension `.gcroot', not
  `.id'.
2004-02-06 10:30:20 +00:00
Eelco Dolstra 9b44480612 * Use a map to lookup primops.
* Various performance improvements in the evaluator.
* Do not link against unused (and missing!) libraries (-lsglr, etc.).
2004-02-04 16:03:29 +00:00
Eelco Dolstra d9f30fe7c7 * Sort `nix-env -q' output by derivation name.
* `--version' flag for all commands.
* Manual updates.
2004-02-02 10:51:54 +00:00
Eelco Dolstra 840551ebdb * Extra bit S' in --query --status' output: show whether there are
any substitutes for the derivation.
2004-01-21 16:41:17 +00:00
Eelco Dolstra 47f19b6293 * Absolutise the specified path in --import' and --profile'. 2004-01-20 20:36:58 +00:00
Eelco Dolstra 55e11bc0d3 * In nix-env --query --status', determine the I' bit by looking at
the output path of a derivation, not the path of its store
  expression.  This ensures that changes that affect the path of the
  store expression but not the output path, do not affect the
  `installed' state of a derivation.
2004-01-15 14:43:00 +00:00
Eelco Dolstra 4a373a3e9a * Implemented Eelco V.'s `nix-env -I' command to specify the default
path of the Nix expression to be used with the import, upgrade, and
  query commands.  For instance,

  $ nix-env -I ~/nixpkgs/pkgs/system/i686-linux.nix

  $ nix-env --query --available   [aka -qa]
  sylpheed-0.9.7
  bison-1.875
  pango-1.2.5
  subversion-0.35.1
  ...

  $ nix-env -i sylpheed

  $ nix-env -u subversion

  There can be only one default at a time.

* If the path to a Nix expression is a symlink, follow the symlink
  prior to resolving relative path references in the expression.
2004-01-05 16:26:43 +00:00
Eelco Dolstra f83c5e3e5f * Implemented Eelco V.'s `-p' command to switch profiles. It switches
the symlink ~/.nix-userenv to the given argument (which defaults to
  .../links/current).  /etc/profile.d/nix-profile creates this symlink
  if it doesn't exist yet.  Example use:

  $ nix-env -l my_profile -i foo.nix subversion quake
  $ nix-env -p my_profile

  I don't like the term "profile".  Let's deprecate it :-)
2004-01-05 11:18:59 +00:00
Eelco Dolstra 392b7e0f8e * Fixed a bug in the upgrade operation. 2003-12-23 22:13:36 +00:00
Eelco Dolstra 833f2fc92d * GCC 2.95 compatibility. 2003-12-22 16:40:46 +00:00
Eelco Dolstra cf0287c09e * Upgrade operation in `nix-env'. For instance, you can say
nix-env -u foo.nix strategoxt

  to replace the installed `strategoxt' derivation with the one from `foo.nix', if 
  the latter has a higher version number.  This is a no-op if `strategoxt' is not 
  installed.  Wildcards are also accepted, so

    nix-env -u foo.nix '*'

  will replace any installed derivation with newer versions from `foo.nix', if 
  available.

  The notion of "version number" is somewhat ad hoc, but should be useful in most 
  cases, as evidenced by the following unit tests for the version comparator:

    TEST("1.0", "2.3", -1);
    TEST("2.1", "2.3", -1);
    TEST("2.3", "2.3", 0);
    TEST("2.5", "2.3", 1);
    TEST("3.1", "2.3", 1);
    TEST("2.3.1", "2.3", 1);
    TEST("2.3.1", "2.3a", 1);
    TEST("2.3pre1", "2.3", -1);
    TEST("2.3pre3", "2.3pre12", -1);
    TEST("2.3a", "2.3c", -1);
    TEST("2.3pre1", "2.3c", -1);
    TEST("2.3pre1", "2.3q", -1);

  (-1 = less, 0 = equal, 1 = greater)

* A new verbosity level `lvlInfo', between `lvlError' and `lvlTalkative'.  This is 
  the default for `nix-env', so without any `-v' flags users should get useful 
  output, e.g.,

$ nix-env -u foo.nix strategoxt
upgrading `strategoxt-0.9.2' to `strategoxt-0.9.3'
2003-12-22 16:04:00 +00:00
Eelco Dolstra f3c9783846 * Version numbers can be omitted in install/uninstall. E.g.,
nix-env -i foo.nix subversion

  The version number part of a derivation name is defined as everything following the 
  first dash not followed by a letter.
2003-12-21 23:58:56 +00:00
Eelco Dolstra a81b621202 * -u' -> -e'.
* `--link' / `-l' flag to specify the switch symlink to use (by default, 
  /nix/var/nix/links/current).
2003-12-21 22:34:41 +00:00
Eelco Dolstra 0c804c6775 * Regression fix: query flags (e.g., "-qsf") were broken. 2003-12-02 10:21:40 +00:00
Eelco Dolstra 078e20885e * Help text for all (non-script) programs, so no more:
$ nix-instantiate --help
error: unknown flag `--help`
Try `nix-instantiate --help' for more information.

:-)
2003-12-01 15:55:05 +00:00
Eelco Dolstra b857267893 * Allow the top-level expression to be a derivation.
* Hack: `nix-env -i *' installs all available derivations.
2003-11-24 11:01:19 +00:00
Eelco Dolstra af7e6fe22e * Don't use a hard-coded path. 2003-11-22 21:12:36 +00:00
Eelco Dolstra 40d9eb14df * Fix the garbage collector. 2003-11-22 15:58:34 +00:00
Eelco Dolstra 06208d1d86 * Uninstallation. 2003-11-21 14:23:18 +00:00
Eelco Dolstra 2e9042bd1e * Uninstall command (doesn't work yet). 2003-11-20 13:48:48 +00:00
Eelco Dolstra e0b5a492f5 * Installation: add the previously installed packages. Switch to the new
configuration.
* Status queries.
2003-11-19 21:32:03 +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