Commit graph

982 commits

Author SHA1 Message Date
Michael Raskin 3a2833daff corrected --help message for nix-store a bit 2007-12-10 22:16:47 +00:00
Eelco Dolstra b42ef9c054 * Syntax to escape '', ${. 2007-12-06 10:20:58 +00:00
Eelco Dolstra 6d6c68c0d2 * Added a new kind of multi-line string literal delimited by two
single quotes.  Example (from NixOS):

    job = ''
      start on network-interfaces

      start script

        rm -f /var/run/opengl-driver
        ${if videoDriver == "nvidia"        
          then "ln -sf ${nvidiaDrivers} /var/run/opengl-driver"
          else if cfg.driSupport
          then "ln -sf ${mesa} /var/run/opengl-driver"
          else ""
        }

        rm -f /var/log/slim.log

      end script
    '';

  This style has two big advantages:

  - \, ' and " aren't special, only '' and ${.  So you get a lot less
    escaping in shell scripts / configuration files in Nixpkgs/NixOS.
    The delimiter '' is rare in scripts (and can usually be written as
    "").  ${ is also fairly rare.

    Other delimiters such as <<...>>, {{...}} and <|...|> were also
    considered but this one appears to have the fewest drawbacks
    (thanks Martin).

  - Indentation is intelligently stripped so that multi-line strings
    can follow the nesting structure of the containing Nix
    expression.  E.g. in the example above 6 spaces are stripped from
    the start of each line.  This prevents unnecessary indentation in
    generated files (which sometimes even breaks things).

  See tests/lang/eval-okay-ind-string.nix for some examples.
2007-11-30 16:48:45 +00:00
Eelco Dolstra 633518628f * nix-env -e: support uninstalling by path, so that one can say
$ nix-env -e $(which firefox)

  or

    $ nix-env -e /nix/store/nywzlygrkfcgz7dfmhm5xixlx1l0m60v-pan-0.132

* nix-env -i: if an argument contains a slash anywhere, treat it as a
  path and follow it through symlinks into the Nix store.  This allows
  things like

    $ nix-build -A firefox
    $ nix-env -i ./result

* nix-env -q/-i/-e: don't complain when the `*' selector doesn't match
  anything.  In particular, `nix-env -q \*' doesn't fail anymore on an
  empty profile.
2007-11-29 16:18:24 +00:00
Eelco Dolstra 06f95dd07c * New primop `readFile' to get the contents of a file as a string. 2007-11-21 13:49:59 +00:00
Eelco Dolstra c370755583 * Flag `--no-build-hook' to disable distributed builds.
* queryDeriver in daemon mode: don't barf if the other side returns an
  empty string (which means there is no deriver).
2007-11-16 16:15:26 +00:00
Eelco Dolstra c05783ad67 * nix-store --import: add a flag --require-signature. 2007-11-16 16:10:27 +00:00
Eelco Dolstra 149e273023 * Don't need gc.hh. 2007-11-15 15:07:27 +00:00
Michael Raskin 6fc60e2060 Added possibility to specify garbage collection levels for store paths; so packages can share intermediate results of compilation and GC will collect it automatically while never touching tarballs, for example. 2007-11-15 03:47:12 +00:00
Eelco Dolstra fa44e401a8 * Documented multi-user Nix. 2007-10-31 18:01:56 +00:00
Eelco Dolstra bfea7b1f35 * Make the --prebuilt-only' / -b' option work not just for queries
but installations/upgrades as well.  So `nix-env -ub \*' will
  upgrade only those packages for which a substitute is available (or
  to be precise, it will upgrade each package to the highest version
  for which a substitute is available).
2007-10-29 14:31:45 +00:00
Eelco Dolstra 42d80d1170 * On FreeBSD, sys/mount.h needs sys/param.h. 2007-10-29 10:03:07 +00:00
Eelco Dolstra d91cd30563 * Detect whether chroot / bind-mount support is available. 2007-10-27 16:51:55 +00:00
Eelco Dolstra dc6f373842 * Delete the chroot directory automatically.
* Removed some debug messages.
2007-10-27 16:06:38 +00:00
Eelco Dolstra 9397cd30c8 * Support for doing builds in a chroot under Linux. The builder is
executed in a chroot that contains just the Nix store, the temporary
  build directory, and a configurable set of additional directories
  (/dev and /proc by default).  This allows a bit more purity
  enforcement: hidden build-time dependencies on directories such as
  /usr or /nix/var/nix/profiles are no longer possible.  As an added
  benefit, accidental network downloads (cf. NIXPKGS-52) are prevented
  as well (because files such as /etc/resolv.conf are not available in
  the chroot).

  However the usefulness of chroots is diminished by the fact that
  many builders depend on /bin/sh, so you need /bin in the list of
  additional directories.  (And then on non-NixOS you need /lib as
  well...)
2007-10-27 00:46:59 +00:00
Eelco Dolstra 0b4ed64d29 * "trace" primop: write the trace to standard error. 2007-10-26 18:25:50 +00:00
Eelco Dolstra f90d85107e 2007-10-22 12:05:30 +00:00
Eelco Dolstra 14e47e9c2c * Doh. 2007-10-10 14:58:00 +00:00
Eelco Dolstra d04291cfab * Doh! Don't change the permissions on /nix/store. 2007-10-10 13:52:38 +00:00
Eelco Dolstra 315183f194 * nix-store --optimise: flag "--dry-run" to just query what the disk
savings would be.
2007-10-10 13:43:04 +00:00
Eelco Dolstra a8629de827 * New command `nix-store --optimise' to reduce Nix store disk space
usage by finding identical files in the store and hard-linking them
  to each other.  It typically reduces the size of the store by
  something like 25-35%.  This is what the optimise-store.pl script
  did, but the new command is faster and more correct (it's safe wrt
  garbage collection and concurrent builds).
2007-10-09 22:14:27 +00:00
Eelco Dolstra 27a0662828 * listToAttrs: the list now should consist of {name, value} attribute
sets instead of {attr, value}.  "name" is better than "attr" because
  the *combination* of the two forms the attribute.
2007-10-09 12:51:25 +00:00
Eelco Dolstra 27f57c9018 * Ignore dangling symlinks in ~/.nix-defexpr. 2007-09-18 14:01:14 +00:00
Eelco Dolstra f3441e6122 * Pass various options to the worker so that flags like -K or -j work
in multi-user Nix (NIX-72).
* Client/worker: exchange a protocol version number for future
  compatibility.
2007-09-18 09:11:20 +00:00
Eelco Dolstra c8ea8a09b8 * nix-env -qa: make the "-A" flag do the expected thing, namely follow
the given attribute path (just as -A does with other option)
  (NIX-83).  So you can now say

  $ nix-env -qa -A nixpkgs_unstable.gnome \*
  atk-1.12.4
  esound-0.2.36
  ...

  to see the packages in the "gnome" attribute in Nixpkgs.

  To *print* the attribute path, you should now use "--attr-path" /
  "-P" (running out of letters...).
2007-09-17 19:24:07 +00:00
Eelco Dolstra 055608227f * nix-env: allow ~/.nix-defexpr to be a directory. If it is, then the
Nix expressions in that directory are combined into an attribute set
  {file1 = import file1; file2 = import file2; ...}, i.e. each Nix
  expression is an attribute with the file name as the attribute
  name.  Also recurses into directories.

* nix-env: removed the "--import" (-I) option which set the
  ~/.nix-defexpr symlink.

* nix-channel: don't use "nix-env --import", instead symlink
  ~/.nix-defexpr/channels.  So finally nix-channel --update doesn't
  override any default Nix expressions but combines with them.

  This means that you can have (say) a local Nixpkgs SVN tree and use
  it as a default for nix-env:

  $ ln -s .../path-to-nixpkgs-tree ~/.nix-defexpr/nixpkgs_svn

  and be subscribed to channels (including Nixpkgs) at the same time.
  (If there is any ambiguity, the -A flag can be used to
  disambiguate, e.g. "nix-env -i -A nixpkgs_svn.pan".)
2007-09-17 16:08:24 +00:00
Eelco Dolstra 0d65fc08e2 * Create the Nix daemon socket in a separate directory
(/nix/var/nix/daemon-socket).  This allows access to the Nix daemon
  to be restricted by setting the mode/ownership on that directory as
  desired, e.g.

    $ chmod 770 /nix/var/nix/daemon-socket
    $ chown root.wheel /nix/var/nix/daemon-socket

  to allow only users in the wheel group to use Nix.

  Setting the ownership on a socket is much trickier, since the socket
  must be deleted and recreated every time the daemon is started
  (which would require additional Nix configuration file directives to
  specify the mode/ownership, and wouldn't support arbitrary ACLs),
  some BSD variants appear to ignore permissions on sockets, and it's
  not clear whether the umask is respected on every platform when
  creating sockets.
2007-08-30 09:50:44 +00:00
Eelco Dolstra cb1c1004cd * When there are multiple substituters, make sure to release the
lock on the output path after trying each.  Otherwise the
  pathIsLockedByMe() test gets confused.
2007-08-28 16:22:08 +00:00
Eelco Dolstra c970b28ba0 * Fix a race condition with parallel builds where multiple
fixed-output derivations or substitutions try to build the same
  store path at the same time.  Locking generally catches this, but
  not between multiple goals in the same process.  This happened
  especially often (actually, only) in the build farm with fetchurl
  downloads of the same file being executed on multiple machines and
  then copied back to the main machine where they would clobber each
  other (NIXBF-13).

  Solution: if a goal notices that the output path is already locked,
  then go to sleep until another goal finishes (hopefully the one
  locking the path) and try again.
2007-08-28 11:36:17 +00:00
Eelco Dolstra e0d7e47862 * PathLocks::lockPaths: don't allow reacquiring a lock we already
hold.
2007-08-28 09:39:03 +00:00
Marc Weber 2629998e91 primop functions listToAttrs (+test), __isAttrs, __trace added
new configuration style proposal in lib/default-unstable.nix
2007-08-18 22:12:00 +00:00
Eelco Dolstra 3757ee589f * Bump the Nix database schema version number; delete the substitutes
table.
2007-08-13 11:37:39 +00:00
Eelco Dolstra 59afc1a15c * Backwards compatibility. 2007-08-13 11:15:13 +00:00
Eelco Dolstra 9e975458b4 * Get rid of the substitutes database table (NIX-47). Instead, if we
need any info on substitutable paths, we just call the substituters
  (such as download-using-manifests.pl) directly.  This means that
  it's no longer necessary for nix-pull to register substitutes or for
  nix-channel to clear them, which makes those operations much faster
  (NIX-95).  Also, we don't have to worry about keeping nix-pull
  manifests (in /nix/var/nix/manifests) and the database in sync with
  each other.

  The downside is that there is some overhead in calling an external
  program to get the substitutes info.  For instance, "nix-env -qas"
  takes a bit longer.

  Abolishing the substitutes table also makes the logic in
  local-store.cc simpler, as we don't need to store info for invalid
  paths.  On the downside, you cannot do things like "nix-store -qR"
  on a substitutable but invalid path (but nobody did that anyway).

* Never catch interrupts (the Interrupted exception).
2007-08-12 00:29:28 +00:00
Eelco Dolstra d71cc503a6 * Don't allocate input files on the stack. 2007-08-07 15:00:13 +00:00
Eelco Dolstra 4cad125e08 * Optionally warn about packages that give an assertion failure. 2007-08-06 16:08:09 +00:00
Eelco Dolstra 6da6fbfbe9 * Properly keep packages during upgrades. 2007-07-05 20:33:04 +00:00
Eelco Dolstra 6d1a1191b0 * Support queryDeriver() in multi-user installations. 2007-06-12 16:53:44 +00:00
Eelco Dolstra 9bff7ad728 * Check against creation of GC roots in the store. Those roots don't
work, because findRoots() stops when it encounters a symlink to the
  store.  And of course the store is supposed to be read-only.
2007-06-11 11:36:22 +00:00
Eelco Dolstra bddc83a148 * New builtin function "isFunction". You're not supposed to use it
;-)
* Channels: fix channels that are plain lists of derivations (like
  strategoxt-unstable) instead  of functions (like nixpkgs-unstable).
  This fixes the error message "error: the left-hand side of the
  function call is neither a function nor a primop (built-in
  operation) but a list".
2007-05-16 16:17:04 +00:00
Eelco Dolstra ca00aa1171 * Allow empty argument lists in function definitions (e.g., `{}:
bla').  Also allow trailing commas (`{x, y,}: ...') as a unintented
  consequence.  Hopefully the reduce/reduce conflict won't cause any
  problems.
2007-05-15 12:14:37 +00:00
Eelco Dolstra 7046c35843 * Typo (reported by Marc Weber). 2007-05-14 12:16:41 +00:00
Eelco Dolstra e5da9c8803 * Create the database directory if it doesn't exist. 2007-05-07 16:59:19 +00:00
Eelco Dolstra 93aefd9fc0 * Give unpacked channels more sensible names than 0, 1, ... They now
get the basename of the channel URL (e.g., nixpkgs-unstable).  The
  top-level Nix expression of the channel is now an attribute set, the
  attributes of which are the individual channels (e.g.,
  {nixpkgs_unstable = ...; strategoxt_unstable = ...}).  This makes
  attribute paths ("nix-env -qaA" and "nix-env -iA") more sensible,
  e.g., "nix-env -iA nixpkgs_unstable.subversion".
2007-05-01 23:16:38 +00:00
Eelco Dolstra a9d15d4f43 * nix-env -i: instead of breaking package ties by version, break them
by priority and version install.  That is, if there are multiple
  packages with the same name, then pick the package with the highest
  priority, and only use the version if there are multiple packages
  with the same priority.

  This makes it possible to mark specific versions/variant in Nixpkgs
  more or less desirable than others.  A typical example would be a
  beta version of some package (e.g., "gcc-4.2.0rc1") which should not
  be installed even though it is the highest version, except when it
  is explicitly selected (e.g., "nix-env -i gcc-4.2.0rc1").

* Idem for nix-env -u, only the semantics are a bit trickier since we
  also need to take into account the priority of the currently
  installed package (we never upgrade to a lower priority, unless
  --always is given).
2007-05-01 20:33:18 +00:00
Eelco Dolstra cbfac2fdcc * Set a terminate() handler to ensure that we leave the BDB
environment cleanly even when an exception is thrown from a
  destructor.  We still crash, but we don't take all other Nix
  processes with us.
2007-05-01 15:16:17 +00:00
Eelco Dolstra 644946feed * Make --verify more interruptable. 2007-05-01 13:21:05 +00:00
Eelco Dolstra bd1f66453a * `nix-env -q --xml --meta' to show all meta attributes. 2007-05-01 11:30:52 +00:00
Eelco Dolstra e20f0da22c * Doh. 2007-04-30 18:41:27 +00:00
Eelco Dolstra 89c1d2b202 * Package flag "keep" that prevents a package from being removed from
a user environment by an install or upgrade action.  This is
  particularly useful if you have a version installed that you don't
  want to upgrade (e.g., because the newer versions are broken).
  Example:

    $ nix-env -u zapping --dry-run
    (dry run; not doing anything)
    upgrading `zapping-0.9.6' to `zapping-0.10cvs6'

    $ nix-env --set-flag keep true zapping

    $ nix-env -u zapping --dry-run
    (dry run; not doing anything)

  However, "-e" will still uninstall the package.  (Maybe we should
  require the keep flag to be explicitly set to false before it can be
  uninstalled.)
2007-04-27 23:48:14 +00:00