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2006-09-04 * Use a proper namespace.Eelco Dolstra1-1/+9
* Optimise header file usage a bit. * Compile the parser as C++.
2006-08-11 * `nix-store --gc --print-dead': print the total size of the storeEelco Dolstra1-5/+10
objects that would be freed.
2006-03-06 * `nix-env (-i|-u) --dry-run' now shows exactly which missing pathsEelco Dolstra1-0/+1
will be built or substituted.
2006-03-01 * Uninitialised variable. Fixes the --delete test.Eelco Dolstra1-1/+1
2006-02-16 * A simple hack to fix NIX-18: the garbage collector cannot run whenEelco Dolstra1-1/+1
the disk is full (because to delete something from the Nix store, we need a Berkeley DB transaction, which takes up disk space). Under normal operation, we make sure that there exists a file /nix/var/nix/db/reserved of 1 MB. When running the garbage collector, we delete that file before we open the Berkeley DB environment.
2005-12-23 * Added a flag `--ignore-liveness' to `nix-store --delete'. ItEelco Dolstra1-3/+8
deletes a path even if it is reachable from a root. However, it won't delete a path that still has referrers (since that would violate store invariants). Don't try this at home. It's a useful hack for recovering from certain situations in a somewhat clean way (e.g., holes in closures due to disk corruption).
2005-12-23 * Revived the old "nix-store --delete" operation that deletes theEelco Dolstra1-1/+22
specified paths from the Nix store. However, this operation is safe: it refuses to delete anything that the garbage collector wouldn't delete.
2005-12-15 * `nix-store --gc' prints out the number of bytes freed on stdoutEelco Dolstra1-1/+16
(even when it is interrupted by a signal).
2005-12-13 * Change `referer' to `referrer' throughout. In particular, theEelco Dolstra1-8/+8
nix-store query options `--referer' and `--referer-closure' have been changed to `--referrer' and `--referrer-closure' (but the old ones are still accepted for compatibility).
2005-05-04 * Include some required header files.Eelco Dolstra1-0/+1
2005-04-08 * nix-store: `--substitute' -> `--register-substitutes'.Eelco Dolstra1-3/+3
2005-04-08 * Make `nix-store --query --tree' work on non-derivations (i.e., onEelco Dolstra1-15/+13
any store path).
2005-04-07 * Support base-32 hash representations.Eelco Dolstra1-2/+6
2005-04-07 * `nix-store --add-fixed' to preload the outputs of fixed-outputEelco Dolstra1-2/+48
derivations. This is mostly to simplify the implementation of nix-prefetch-{url, svn}, which now work properly in setuid installations. * Enforce valid store names in `nix-store --add / --add-fixed'.
2005-03-26 * Re-enable dot graph generation.Eelco Dolstra1-15/+13
2005-03-23 * `nix-store --register-validity': allow a path to refer to a pathEelco Dolstra1-12/+13
listed later in the list of new valid paths.
2005-03-23 * Canonicalise path meta-data in `nix-store --register-validity'.Eelco Dolstra1-1/+4
2005-03-23 * nix-store: `--isvalid' -> `--check-validity', `--validpath' ->Eelco Dolstra1-14/+30
`--register-validity'. * `nix-store --register-validity': read arguments from stdin, and allow the references and deriver to be set.
2005-03-02 * `nix-store -q --hash' to quickly query the hash of the contents of aEelco Dolstra1-6/+17
store path (which is stored in the database).
2005-02-22 * Compatibility hack so that Nixpkgs can continue to do hash checkingEelco Dolstra1-1/+1
in `fetchurl' in Nix <= 0.7, but doesn't in Nix 0.8.
2005-02-17 * `nix-store -q --tree' shows a tree representing the dependency graphEelco Dolstra1-1/+85
of the given derivation. Useful for getting a quick overview of how something was built. E.g., to find out how the `baffle' program in your user environment was built, you can do $ nix-store -q --tree $(nix-store -qd $(which baffle)) Tree nesting depth is minimised (?) by topologically sorting paths under the relation A < B iff A \in closure(B).
2005-02-17 * Switch to the calling user context for some more operations in aEelco Dolstra1-0/+1
setuid installation.
2005-02-14 * It is now possible to add store derivations or paths directly to aEelco Dolstra1-9/+0
user environment, e.g., $ nix-env -i /nix/store/z58v41v21xd3ywrqk1vmvdwlagjx7f10-aterm-2.3.1.drv or $ nix-env -i /nix/store/hsyj5pbn0d9iz7q0aj0fga7cpaadvp1l-aterm-2.3.1 This is useful because it allows Nix expressions to be bypassed entirely. For instance, if only a nix-pull manifest is provided, plus the top-level path of some component, it can be installed without having to supply the Nix expression (e.g., for obfuscation, or to be independent of Nix expression language changes or context dependencies).
2005-02-09 * Propagate the deriver of a path through the substitute mechanism.Eelco Dolstra1-0/+1
* 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.
2005-02-08 * Subflag in `--verify': `nix-store --verify --check-contents' checksEelco Dolstra1-1/+11
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 * Updated `nix-store --verify' to the new schema.Eelco Dolstra1-2/+2
2005-02-07 * `nix-store -qb' to query derivation environment bindings. UsefulEelco Dolstra1-11/+32
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 * Maintain a database table (`derivers') that maps output paths to theEelco Dolstra1-2/+15
derivation that produced them. * `nix-store -qd PATH' prints out the derivation that produced a path.
2005-02-01 * Move root finding from `nix-collect-garbage' to `nix-store --gc'.Eelco Dolstra1-15/+5
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 * nix-build: use an indirection scheme to make it easier for users toEelco Dolstra1-10/+11
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 * nix-store, nix-instantiate: added an option `--add-root' toEelco Dolstra1-3/+43
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.
2005-01-27 * Fix and simplify the garbage collector (it's still not concurrent,Eelco Dolstra1-42/+13
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.
2005-01-25 * Maintain the references/referers relation also for derivations.Eelco Dolstra1-1/+36
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 * Simplification: registerSubstitutes -> registerSubstitute. We noEelco Dolstra1-4/+1
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 * Really fix the substitute mechanism, i.e., ensure the closureEelco Dolstra1-1/+9
invariant by registering references through the manifest. * Added a test for nix-pull.
2005-01-25 * In nix-store: added query `--referers-closure' that returns theEelco Dolstra1-2/+6
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 * In nix-store: change `--build' back to `--realise'. Also broughtEelco Dolstra1-11/+35
back the query flag `--force-realise'. * Fixed some of the tests.
2005-01-19 * Nix-store queries `--references' and `referers' to query the pointerEelco Dolstra1-18/+19
graph. That is, `nix-store --query --references PATH' shows the set of paths referenced by PATH, and `nix-store --query --referers PATH' shows the set of paths referencing PATH.
2005-01-19 * Renamed `normalise.cc' -> `build.cc', `storeexprs.cc' ->Eelco Dolstra1-2/+2
`derivations.cc', etc. * Store the SHA-256 content hash of store paths in the database after they have been built/added. This is so that we can check whether the store has been messed with (a la `rpm --verify'). * When registering path validity, verify that the closure property holds.
2005-01-19 * `nix-store --build' now builds its arguments in parallel instead ofEelco Dolstra1-1/+2
sequentially (within the limits set by `--jobs'). This should greatly improve the utilisation of the build farm when doing Nixpkgs builds.
2005-01-19 * Change extension `.store' to `.drv'.Eelco Dolstra1-34/+36
* Re-enable `nix-store --query --requisites'.
2005-01-19 * Started removing closure store expressions, i.e., the explicitEelco Dolstra1-32/+12
representation of closures as ATerms in the Nix store. Instead, the file system pointer graph is now stored in the Nix database. This has many advantages: - It greatly simplifies the implementation (we can drop the notion of `successors', and so on). - It makes registering roots for the garbage collector much easier. Instead of specifying the closure expression as a root, you can simply specify the store path that must be retained as a root. This could not be done previously, since there was no way to find the closure store expression containing a given store path. - Better traceability: it is now possible to query what paths are referenced by a path, and what paths refer to a path.
2004-12-20 * Simplify the substitute mechanism:Eelco Dolstra1-1/+13
- Drop the store expression. So now a substitute is just a command-line invocation (a program name + arguments). If you register a substitute you are responsible for registering the expression that built it (if any) as a root of the garbage collector. - Drop the substitutes-rev DB table.
2004-09-10 * Operation `--delete-generations' to delete generations of aEelco Dolstra1-9/+5
profile. Arguments are either generation number, or `old' to delete all non-current generations. Typical use: $ nix-env --delete-generations old $ nix-collect-garbage * istringstream -> string2Int.
2004-08-31 * Main the `substitutes-rev' table again, but now in a way thatEelco Dolstra1-1/+4
doesn't take \Theta(n^2) space/time complexity.
2004-08-25 * `--min-age' flag in nix-store and nix-collect-garbage to only deleteEelco Dolstra1-10/+15
unreachable paths that haven't been used for N hours. For instance, `nix-collect-garbage --min-age 168' only deletes paths that haven't been accessed in the last week. This is useful for instance in the build farm where many derivations can be shared between consecutive builds, and we wouldn't want a garbage collect to throw them all away. We could of course register them as roots, but then we'd to unregister them at some point, which would be a pain to manage. The `--min-age' flag gives us a sort of MRU caching scheme. BUG: this really shouldn't be in gc.cc since that violates mechanism/policy separation.
2004-08-25 * `nix-collect-garbage' now actually performs a garbage collection, itEelco Dolstra1-1/+1
doesn't just print the set of paths that should be deleted. So there is no more need to pipe the result into `nix-store --delete' (which doesn't even exist anymore).
2004-08-25 * Put the garbage collector in nix-store: operation `--gc',Eelco Dolstra1-13/+57
suboperations `--print-live', `--print-dead', and `--delete'. The roots are not determined by nix-store; they are read from standard input. This is to make it easy to customise what the roots are. The collector now no longer fails when store expressions are missing (which legally happens when using substitutes). It never tries to fetch paths through substitutes. TODO: acquire a global lock on the store while garbage collecting. * Removed `nix-store --delete'.
2004-06-28 * Added a switch `--fallback'. From the manual:Eelco Dolstra1-4/+2
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).
2004-06-21 * Remove debug output.Eelco Dolstra1-1/+0