depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2009-04-21	* nix-store --verify: don't bail out if a referenced path is missing.	Eelco Dolstra	1	-14/+13
	(It can't fix it though.)
2009-04-16	* Fix a few "comparison is always false/true due to limited range of	Eelco Dolstra	1	-1/+1
	data type" warnings on 64-bit platforms. The one in parser.y is likely to be a real bug.
2009-04-15	* Don't cache transient build hook problems.	Eelco Dolstra	1	-6/+11

2009-03-31	* Do a substitution even if --max-jobs == 0.	Eelco Dolstra	1	-17/+22

2009-03-31	* Doh!	Eelco Dolstra	1	-1/+1

2009-03-30	(no commit message)	Eelco Dolstra	1	-0/+1

2009-03-30	* Make the poll interval configurable.	Eelco Dolstra	1	-2/+2

2009-03-29	* With `--max-jobs 0', print a nicer error message than "Assertion	Eelco Dolstra	1	-1/+5
	`!awake.empty()' failed."
2009-03-29	* Use polling to wait for a remote build slot when using a build hook	Eelco Dolstra	1	-31/+1
	(that is, call the build hook with a certain interval until it accepts the build). * build-remote.pl was totally broken: for all system types other than the local system type, it would send all builds to the first machine of the appropriate type.
2009-03-28	* Scan for references and compute the SHA-256 hash of the output in	Eelco Dolstra	3	-89/+50
	one pass. This halves the amount of I/O.
2009-03-28	* Don't use the non-standard __gnu_cxx::stdio_filebuf class.	Eelco Dolstra	2	-33/+17

2009-03-28	* Simplify communication with the hook a bit (don't use file	Eelco Dolstra	1	-70/+16
	descriptors 3/4, just use stdin/stderr).
2009-03-28	* The `fixedOutput' variable didn't get initialised when using a build	Eelco Dolstra	1	-5/+6
	hook, causing negative caching to fail randomly.
2009-03-27	* Create /nix/store if it doesn't exist.	Eelco Dolstra	1	-0/+2

2009-03-26	* Don't use ULLONG_MAX in maxFreed - use 0 to mean "no limit".	Eelco Dolstra	3	-9/+4
	18446744073709551615ULL breaks on GCC 3.3.6 (`integer constant is too large for "long" type').
2009-03-25	* Negative caching, i.e. caching of build failures. Disabled by	Eelco Dolstra	3	-6/+79
	default. This is mostly useful for Hydra.
2009-03-24	* Doh.	Eelco Dolstra	1	-1/+1

2009-03-24	(no commit message)	Eelco Dolstra	1	-1/+1

2009-03-23	* No longer block while waiting for a lock on a store path. Instead	Eelco Dolstra	5	-28/+85
	poll for it (i.e. if we can't acquire the lock, then let the main select() loop wait for at most a few seconds and then try again). This improves parallelism: if two nix-store processes are both trying to build a path at the same time, the second one shouldn't block; it should first see if it can build other goals. Also, it prevents the deadlocks that have been occuring in Hydra lately, where a process waits for a lock held by another process that's waiting for a lock held by the first. The downside is that polling isn't really elegant, but POSIX doesn't provide a way to wait for locks in a select() loop. The only solution would be to spawn a thread for each lock to do a blocking fcntl() and then signal the main thread, but that would require pthreads.
2009-03-22	* Refactoring.	Eelco Dolstra	1	-136/+85

2009-03-22	* NAR archives: handle files larger than 2^32 bytes. Previously it	Eelco Dolstra	1	-1/+1
	would just silently store only (fileSize % 2^32) bytes. * Use posix_fallocate if available when unpacking archives. * Provide a better error message when trying to unpack something that isn't a NAR archive.
2009-03-18	* Unify exportReferencesGraph and exportBuildReferencesGraph, and make	Eelco Dolstra	1	-48/+18
	sure that it works as expected when you pass it a derivation. That is, we have to make sure that all build-time dependencies are built, and that they are all in the input closure (otherwise remote builds might fail, for example). This is ensured at instantiation time by adding all derivations and their sources to inputDrvs and inputSrcs.
2009-03-18	* Acquire the locks on the output paths before trying to run the build	Eelco Dolstra	1	-145/+71
	hook. This fixes a problem with log files being partially or completely filled with 0's because another nix-store process truncates the log file. It should also be more efficient.
2009-03-17	* Cleanup.	Eelco Dolstra	1	-22/+9

2009-02-27	* Allow options from the Nix config file to be overriden from the	Eelco Dolstra	2	-0/+14
	command line (e.g. "--option build-use-chroot true").
2009-02-16	* Release output locks as soon as possible, not when the destructor of	Eelco Dolstra	3	-0/+14
	the DerivationGoal runs. Otherwise, if a goal is a top-level goal, then the lock won't be released until nix-store finishes. With --keep-going and lots of top-level goals, it's possible to run out of file descriptors (this happened sometimes in the build farm for Nixpkgs). Also, for failed derivation, it won't be possible to build it again until the lock is released. * Idem for locks on build users: these weren't released in a timely manner for failed top-level derivation goals. So if there were more than (say) 10 such failed builds, you would get an error about having run out of build users.
2009-02-02	* Build hooks: use nix-store --import. This prevents a redundant	Eelco Dolstra	2	-9/+27
	scan for runtime dependencies (i.e. the local machine shouldn't do a scan that the remote machine has already done). Also pipe directly into `nix-store --import': don't use a temporary file.
2009-01-27	* Make it compile on Debian 4.0 (which doesn't define PER_LINUX32_3GB	Eelco Dolstra	1	-1/+1
	in sys/personality.h).
2009-01-13	* When using a build hook, distinguish between transient failures	Eelco Dolstra	1	-4/+20
	(e.g. an SSH connection problem) and permanent failures (i.e. the builder failed). This matters to Hydra (it wants to know whether it makes sense to retry a build).
2009-01-12	* Support i686-linux builds directly on x86_64-linux Nix	Eelco Dolstra	1	-1/+18
	installations. This is implemented using the personality() syscall, which causes uname to return "i686" in child processes.
2008-12-16	* nix-store --verify: repair bad hash fields in the metadata file.	Eelco Dolstra	2	-5/+16

2008-12-16	* Pass --use-atime / --max-atime to the daemon.	Eelco Dolstra	2	-1/+5

2008-12-15	* Delete the chroot if it already exists (e.g. left over from an	Eelco Dolstra	1	-0/+1
	interrupted build).
2008-12-12	* Put chroots in the Nix store. This ensures that we can create hard	Eelco Dolstra	2	-2/+14
	links to the inputs.
2008-12-12	* Simplify deleting .lock files in /nix/store: just don't delete them	Eelco Dolstra	1	-30/+18
	if they belong a path that's currently being built. This gets rid of some Cygwin-specific code.
2008-12-12	* Detect whether unshare() is available.	Eelco Dolstra	1	-4/+1

2008-12-12	* Use a PathSet for the chroot directories so that we don't	Eelco Dolstra	1	-6/+7
	accidentally bind-mount a directory twice.
2008-12-12	* Define _GNU_SOURCE. Hopefully this fixes the build on Debian 4.0	Eelco Dolstra	1	-0/+3
	(http://hydra.nixos.org/nixlog/384/1).
2008-12-11	* Don't provide the whole Nix store in the chroot, but only the	Eelco Dolstra	1	-10/+44
	closure of the inputs. This really enforces that there can't be any undeclared dependencies on paths in the store. This is done by creating a fake Nix store and creating bind-mounts or hard-links in the fake store for all paths in the closure. After the build, the build output is moved from the fake store to the real store. TODO: the chroot has to be on the same filesystem as the Nix store for this to work, but this isn't enforced yet. (I.e. it only works currently if /tmp is on the same FS as /nix/store.)
2008-12-11	* Revert r13150: now that we use private namespaces for the chroot, we	Eelco Dolstra	3	-8/+1
	don't have to put the chroot in /nix/var/nix/chroots anymore. They're back in /tmp now.
2008-12-11	* Provide a minimal /etc/passwd in the chroot to keep some builders	Eelco Dolstra	1	-1/+12
	happy.
2008-12-11	* Do chroot builds in a private namespace. This means that all the	Eelco Dolstra	1	-134/+45
	bind-mounts we do are only visible to the builder process and its children. So accidentally doing "rm -rf" on the chroot directory won't wipe out /nix/store and other bind-mounted directories anymore. Also, the bind-mounts in the private namespace disappear automatically when the builder exits.
2008-12-11	* Open the connection to the daemon lazily (on demand) so that	Eelco Dolstra	2	-4/+36
	read-only operations (like nix-env -qa) work properly when the daemon isn't running.
2008-12-04	* Build on Debian 4.0 (GCC 4.1.1).	Eelco Dolstra	1	-1/+1

2008-12-04	* Propagate --max-silent-time to remote machines.	Eelco Dolstra	1	-0/+1

2008-12-04	* When using build hooks, for any nix-store -r build operation, it is	Eelco Dolstra	1	-1/+12
	necessary that at least one build hook doesn't return "postpone", otherwise nix-store will barf ("waiting for a build slot, yet there are no running children"). So inform the build hook when this is the case, so that it can start a build even when that would exceed the maximum load on a machine.
2008-12-03	* addToStore() in nix-worker: don't write the NAR dump received from	Eelco Dolstra	2	-19/+33
	the client to a temporary directory, as that is highly inefficient.
2008-12-03	* Pass HashType values instead of strings.	Eelco Dolstra	6	-16/+17

2008-12-03	* Made addToStore() a lot more efficient: it no longer reads the path	Eelco Dolstra	1	-32/+28
	being copied 3 times in the worst case. It doesn't run in constant space, but it didn't do that anyway.
2008-12-03	* Unify the treatment of sources copied to the store, and recursive	Eelco Dolstra	6	-47/+108
	SHA-256 outputs of fixed-output derivations. I.e. they now produce the same store path: $ nix-store --add x /nix/store/j2fq9qxvvxgqymvpszhs773ncci45xsj-x $ nix-store --add-fixed --recursive sha256 x /nix/store/j2fq9qxvvxgqymvpszhs773ncci45xsj-x the latter being the same as the path that a derivation derivation { name = "x"; outputHashAlgo = "sha256"; outputHashMode = "recursive"; outputHash = "..."; ... }; produces. This does change the output path for such fixed-output derivations. Fortunately they are quite rare. The most common use is fetchsvn calls with SHA-256 hashes. (There are a handful of those is Nixpkgs, mostly unstable development packages.) * Documented the computation of store paths (in store-api.cc).