lix -

Age	Commit message (Collapse)	Author
2003-08-05	* Allow the top-level expression to be a list of expressions that	Eelco Dolstra
	normalise to Nix expression.
2003-08-05	* Delete obstructed paths prior to building.	Eelco Dolstra

2003-08-04	* Path locking in addToStore() and expandPath().	Eelco Dolstra

2003-08-01	* In normaliseFState(), wrap registration of the output paths and the	Eelco Dolstra
	normal form in a single transaction to ensure that if we crash, either everything is registered or nothing is. This is for recoverability: unregistered paths in the store can be deleted arbitrarily, while registered paths can only be deleted by running the garbage collector.
2003-08-01	* Defensive programming against POSIX locking idiocy.	Eelco Dolstra
	* Simplified realiseSlice().
2003-08-01	* normaliseFState() now locks all output paths prior to building, thus	Eelco Dolstra
	ensuring that simultaneous invocations of Nix don't clobber each other's builds. * Fixed a bug in `make install'.
2003-08-01	* Don't use substitutes in addToStore().	Eelco Dolstra

2003-07-31	* Put the database verifier in a transaction.	Eelco Dolstra

2003-07-31	* Enclose most operations that update the database in transactions.	Eelco Dolstra
	* Open all database tables (Db objects) at initialisation time, not every time they are used. This is necessary because tables have to outlive all transactions that refer to them.
2003-07-31	* Use a more reasonable log file size (256 KB instead of 10 MB).	Eelco Dolstra
	* Checkpoint on exit.
2003-07-31	* Started using Berkeley DB environments. This is necessary for	Eelco Dolstra
	transaction support (but we don't actually use transactions yet).
2003-07-31	* Set execute bit.	Eelco Dolstra

2003-07-30	* Don't make the builder executable.	Eelco Dolstra

2003-07-29	* Get garbage collection and cache population to work properly.	Eelco Dolstra
	Renamed `fstateRefs' to `fstateRequisites'. The semantics of this function is that it returns a list of all paths necessary to realise a given expression. For a derive expression, this is the union of requisites of the inputs; for a slice expression, it is the path of each element in the slice. Also included are the paths of the expressions themselves. Optionally, one can also include the requisites of successor expressions (to recycle intermediate results). * `nix-switch' now distinguishes between an expression and its normal form. Usually, only the normal form is registered as a root of the garbage collector. With the `--source-root' flag, it will also register the original expression as a root. * `nix-collect-garbage' now has a flag `--keep-successors' which causes successors not to be included in the list of garbage paths. * `nix-collect-garbage' now has a flag `--invert' which will print all paths that should not be garbage collected.
2003-07-29	* Nicer dot graphs.	Eelco Dolstra

2003-07-29	* `fstateRefs' now works on derive expressions as well. TODO: make	Eelco Dolstra
	this more efficient. * A flag `-n' in 'nix --query' to normalise the argument. Default is not to normalise.
2003-07-29	* Let `nix --install' print out the id of the normal form.	Eelco Dolstra
	* Some minor refactoring.
2003-07-28	* `nix --help'.	Eelco Dolstra
	* `nix --query --graph' to print a dot dependency graph of derive expressions.
2003-07-24	* Fix message.	Eelco Dolstra

2003-07-24	* The `-v' flag no longer takes an argument; it should be repeated	Eelco Dolstra
	instead (e.g., `-vvvv' for lots of output). Default is to only print error messages.
2003-07-24	* Do sync the database, since not doing so caused database changes not	Eelco Dolstra
	to reach the disk at all. Looks like a bug.
2003-07-24	* Debug levels. Use `--verbose / -v LEVEL' to display only messages	Eelco Dolstra
	up to the given verbosity levels. These currently are: lvlError = 0, lvlNormal = 5, lvlDebug = 10, lvlDebugMore = 15 although only lvlError and lvlDebug are actually used right now.
2003-07-24	* Don't sync the database on close. This was killing performance.	Eelco Dolstra
	(Of course, the real problem is that we open the database for every operation; we should only open it once. And we should use transactions.)
2003-07-23	* Incorporated Berkeley DB and ATerm into the source tree.	Eelco Dolstra
	* `make dist'.
2003-07-22	* libdb_cxx-4 -> libdb_cxx	Eelco Dolstra

2003-07-22	* Substitutes now should produce a path with the same id as they are	Eelco Dolstra
	substituting for (obvious, really). * For greater efficiency, nix-pull/unnar will place the output in a path that is probably the same as what is actually needed, thus preventing a path copy. * Even if a output id is given in a Fix package expression, ensure that the resulting Nix derive expression has a different id. This is because Nix expressions that are semantically equivalent (i.e., build the same result) might be different w.r.t. efficiency or divergence. It is absolutely vital for the substitute mechanism that such expressions are not used interchangeably.
2003-07-22	* `nix --query --expansion' (`-qe') to get any path with content	Eelco Dolstra
	corresponding to the given id.
2003-07-21	* In `--query --generators', print out paths, not ids.	Eelco Dolstra
	(There should really be a switch for this).
2003-07-21	* Check for errors.	Eelco Dolstra

2003-07-21	* Canonicalise path.	Eelco Dolstra

2003-07-21	* Allow the output/expression id to be forced to a certain	Eelco Dolstra
	value; this potentially dangerous feature enables better sharing for those paths for which the content is known in advance (e.g., because a content hash is given). * Fast builds: if we can expand all output paths of a derive expression, we don't have to build.
2003-07-21	* Changes to the command line syntax of Nix.	Eelco Dolstra
	* A function to find all Nix expressions whose output ids are completely contained in some set. Useful for uploading relevant Nix expressions to a shared cache.
2003-07-21	* Memoize the evaluation of Fix expressions to speed up computation.	Eelco Dolstra

2003-07-20	* Argh, another short-write problem. Added wrappers around	Eelco Dolstra
	read()/write() to fix this once and for all.
2003-07-20	* Remove accidentally added file.	Eelco Dolstra

2003-07-20	* Refactorings.	Eelco Dolstra

2003-07-17	* For debugging: `nix --verify' to check the consistency of the	Eelco Dolstra
	database and store.
2003-07-17	* Preserve the executable bit.	Eelco Dolstra

2003-07-16	* The write() system call can write less than the requested	Eelco Dolstra
	number of bytes, e.g., in case of a signal like SIGSTOP. This caused `nix --dump' to fail sometimes. Note that this bug went unnoticed because the call to `nix --dump' is in a pipeline, and the shell ignores non-zero exit codes from all but the last element in the pipeline. Is there any way to check the result of the initial elements in the pipeline? (In other words, is it at all possible to write reliable shell scripts?)
2003-07-16	* Bug fix: slices are transitive, so if we detect that an	Eelco Dolstra
	input path is referenced in an output paths, we also have to add all ids referenced by that input path. * Better debug assertions to catch these sorts of errors.
2003-07-16	* Substitute fixes.	Eelco Dolstra

2003-07-16	* Fix the -qr query.	Eelco Dolstra

2003-07-16	* Fix self-referential outputs.	Eelco Dolstra
	* Fix -qp query.
2003-07-15	* Get Fix and Nix to work again.	Eelco Dolstra

2003-07-15	* The new normaliser now passes the unit tests.	Eelco Dolstra

2003-07-15	* Basic work on allowing derive expressions to build multiple paths.	Eelco Dolstra
	This is not entirely trivial since this introduces the possibility of mutual recursion. * Made normal forms self-contained. * Use unique ids, not content hashes, for content referencing.
2003-07-14	* After building, scan for actual file system references as	Eelco Dolstra
	opposed to declared references. This prunes the reference graph, thus allowing better garbage collection and more efficient derivate distribution.
2003-07-13	* Don't check for staleness by default.	Eelco Dolstra

2003-07-13	* Pass $(prefix) and other variables through -D..., not	Eelco Dolstra
	through config.h, to prevent silly Autoconf problems.
2003-07-13	* Generate the scripts so that we can substitute the prefix	Eelco Dolstra
	etc. correctly. * Fixed nix-switch.