Commit graph

871 commits

Author SHA1 Message Date
Eelco Dolstra a04a5de8f7 * Implement the `gc-keep-derivations' global configuretion flag. 2005-02-14 14:16:56 +00:00
Eelco Dolstra 6a8ef36fe6 * Global configuration option `env-keep-derivations' to store pointer
to derivations in user environments.  Nice for developers (since it
  prevents build-time-only dependencies from being GC'ed, in
  conjunction with `gc-keep-outputs').  Turned off by default.
2005-02-14 13:07:09 +00:00
Eelco Dolstra b0aba6ec2a * Don't keep the derivation symlink when creating profile generations. 2005-02-14 10:44:57 +00:00
Eelco Dolstra 32429142cd * Type error in constructor call (caught by GCC 3.3, but not 3.4!). 2005-02-14 09:53:11 +00:00
Eelco Dolstra 20ce2642fc * Refactoring to support different installation sources in nix-env.
* Set the references for the user environment manifest properly.
* Don't copy the manifest (this was accidental).
* Don't store derivation paths in the manifest (maybe this should be
  made optional).  This cleans up the semantics of nix-env, which were
  weird.
* Hash on the output paths of activated components, not on derivation
  paths.  This is because we don't know the derivation path of already
  installed components anymore, and it allows the installation of
  components by store path (skipping Nix expressions entirely).
* Query options `--out-path' and `--drv-path' to show the output and
  derivation paths of components, respectively (the latter replaces
  the `--expr' query).
2005-02-11 16:56:45 +00:00
Eelco Dolstra 80870d9291 * Input sources should be in the set of all referenceable paths too. 2005-02-11 16:03:47 +00:00
Eelco Dolstra 3a99616968 * Commit more often to prevent out-of-memory errors. 2005-02-09 14:37:24 +00:00
Eelco Dolstra 98df735b51 * Propagate the deriver of a path through the substitute mechanism.
* Removed some dead code (successor stuff) from nix-push.
* Updated terminology in the tests (store expr -> drv path).
* Check that the deriver is set properly in the tests.
2005-02-09 12:57:13 +00:00
Eelco Dolstra 582e01c06f * Automatically upgrade <= 0.7 Nix stores to the new schema (so that
existing user environments continue to work).
* `nix-store --verify': detect incomplete closures.
2005-02-09 09:50:29 +00:00
Eelco Dolstra c547439843 * Subflag in --verify': nix-store --verify --check-contents' checks
that the contents of store paths has not changed by comparing hashes
  of their current contents to the hashes stored in the database.
2005-02-08 13:48:53 +00:00
Eelco Dolstra 3d74274b37 * Updated `nix-store --verify' to the new schema. 2005-02-08 13:23:55 +00:00
Eelco Dolstra 60feff82cf * Set umask to prevent permission problems. 2005-02-08 13:00:39 +00:00
Eelco Dolstra 48ebe4527e * Better error reporting in readmanifest.
* Use force flag in `mv' to prevent silly interactive questions (this
  happens with shared Nix stores).
2005-02-08 11:40:19 +00:00
Eelco Dolstra fbc434ee4c * `nix-store -qb' to query derivation environment bindings. Useful
for finding build-time dependencies (possibly after a build).  E.g.,

    $ nix-store -qb aterm $(nix-store -qd $(which strc))
    /nix/store/jw7c7s65n1gwhxpn35j9rgcci6ilzxym-aterm-2.3.1

* Arguments to nix-store can be files within store objects, e.g.,
  /nix/store/jw7c...-aterm-2.3.1/bin/baffle.

* Idem for garbage collector roots.
2005-02-07 14:32:44 +00:00
Eelco Dolstra 450c358e20 * Maintain a database table (`derivers') that maps output paths to the
derivation that produced them.
* `nix-store -qd PATH' prints out the derivation that produced a path.
2005-02-07 13:40:40 +00:00
Eelco Dolstra a37338815d * A GC setting `gc-keep-outputs' to specify whether output paths of
derivations should be kept.
2005-02-01 22:07:48 +00:00
Eelco Dolstra 2e6bf723e4 * Added a global configuration file (/nix/etc/nix/nix.conf). It
contains options for the garbage collector right now, but other
  stuff can be added here later.
2005-02-01 20:53:14 +00:00
Eelco Dolstra 9f6835c282 * Remove debug code. 2005-02-01 17:52:11 +00:00
Eelco Dolstra c3981d81f6 * Make check fixes. 2005-02-01 17:50:48 +00:00
Eelco Dolstra 65b6c8ab4c * Move root finding from nix-collect-garbage' to nix-store --gc'.
This was necessary becase root finding must be done after
  acquisition of the global GC lock.

  This makes `nix-collect-garbage' obsolete; it is now just a wrapper
  around `nix-store --gc'.

* Automatically remove stale GC roots (i.e., indirect GC roots that
  point to non-existent paths).
2005-02-01 15:05:32 +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 a6b65fd5e1 * Get rid of hardcoded paths. 2005-02-01 09:54:56 +00:00
Eelco Dolstra 06b4424286 * Add missing files to dist.
* Fix GC and substitute bugs related to self-references.  Add a
  regression test.
2005-02-01 09:23:38 +00:00
Eelco Dolstra 32fa82a56a * Acquire a global GC lock to prevent new temporary root files from
being created after the garbage collector has read the temproots
  directory.  This blocks the creation of new processes, but the
  garbage collector could periodically release the GC lock to allow
  them to run.
2005-01-31 22:23:49 +00:00
Eelco Dolstra 89c9bc11ab * Add a test for a more subtle race: a process starting after the
temporary root files have been read but creating outputs before the
  store directory has been read.
2005-01-31 22:01:55 +00:00
Eelco Dolstra 207bdcbe86 * Automatically remove temporary root files. 2005-01-31 21:20:59 +00:00
Eelco Dolstra 252c9c91ab * Topologically sort paths under the references relation to ensure
that they are deleted in an order that maintains the closure
  invariant.
* Presence of a path in a temporary roots file does not imply that all
  paths in its closure are also present, so add the closure.
2005-01-31 14:00:43 +00:00
Eelco Dolstra 33c5d23b81 * Don't delete active lock files. 2005-01-31 12:19:53 +00:00
Eelco Dolstra 1328aa3307 * Start of concurrent garbage collection. Processes write temporary
roots to a per-process temporary file in /nix/var/nix/temproots
  while holding a write lock on that file.  The garbage collector
  acquires read locks on all those files, thus blocking further
  progress in other Nix processes, and reads the sets of temporary
  roots.
2005-01-31 10:27:25 +00:00
Eelco Dolstra a7668411a1 * Add a test to check whether concurrent garbage collection (i.e.,
running the collector while builds are in progress) works
  correctly.  The test currently fails.
2005-01-28 20:36:46 +00:00
Eelco Dolstra 22cfdfa246 * Use NIX_STORE environment variable to locate the store (in addition
to NIX_STORE_DIR) so that Nix invocations in builders in `make
  check' work correctly if the store doesn't exist.
2005-01-28 13:19:16 +00:00
Eelco Dolstra 9ab0bc9395 * Another horrible `make check' hack. 2005-01-28 11:05:56 +00:00
Eelco Dolstra 0ea8b6993a * Only invalidate paths when they are in fact valid. 2005-01-28 11:05:46 +00:00
Eelco Dolstra ac2f665853 * Set execute permission. 2005-01-27 19:15:12 +00:00
Eelco Dolstra a85d1849af * Missing dependency; only a problem when building from Subversion. 2005-01-27 19:00:48 +00:00
Eelco Dolstra e5c16c9582 * Add missing substitutes files to dist.
* Add a garbage collector test.
2005-01-27 17:48:50 +00:00
Eelco Dolstra 8a3eef22e3 * Fix deadlock. 2005-01-27 17:48:14 +00:00
Eelco Dolstra c60a4943ba * Update referers mappings when updating/clearing the references
mapping.
* Do things in the right order in invalidatePath().
2005-01-27 16:18:39 +00:00
Eelco Dolstra 4e37548a1e * Remove deleted files from EXTRA_DIST (again). 2005-01-27 15:31:49 +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 59682e6188 * Make lock removal safe by signalling to blocked processes that the
lock they are waiting on has become stale (we do this by writing a
  meaningless token to the unlinked file).
2005-01-27 12:19:25 +00:00
Eelco Dolstra a24b78e9f1 * Maintain the references/referers relation also for derivations.
This simplifies garbage collection and `nix-store --query
  --requisites' since we no longer need to treat derivations
  specially.

* Better maintaining of the invariants, e.g., setReferences() can only
  be called on a valid/substitutable path.
2005-01-25 21:28:25 +00:00
Eelco Dolstra 2a2756b856 * Simplification: registerSubstitutes -> registerSubstitute. We no
longer need the former since there we no longer have the
  substitutes-rev table (which triggered a O(n^2) cost in updating
  them).
2005-01-25 20:27:40 +00:00
Eelco Dolstra a9340fa672 * Remove removed files from EXTRA_DIST. 2005-01-25 17:25:20 +00:00
Eelco Dolstra 498f4915cc * Re-enable all tests. 2005-01-25 17:24:14 +00:00
Eelco Dolstra 066da4ab85 * Really fix the substitute mechanism, i.e., ensure the closure
invariant by registering references through the manifest.
* Added a test for nix-pull.
2005-01-25 17:08:52 +00:00
Eelco Dolstra c6290e42bc * Fix the `--fallback' switch.
* Fix the substitutes tests.
2005-01-25 13:00:12 +00:00
Eelco Dolstra 581fc47783 * Fix the build hook mechanism; pass the pointer graph to the hook. 2005-01-25 11:55:43 +00:00
Eelco Dolstra 52bf9b86bb * In nix-store: added query `--referers-closure' that returns the
closure of the referers relation rather than the references
  relation, i.e., the set of all paths that directly or indirectly
  refer to the given path.  Note that contrary to the references
  closure this set is not fixed; it can change as paths are added to
  or removed from the store.
2005-01-25 11:18:03 +00:00