depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2006-03-09	* Ugh, printHash() was very inefficient because it used	Eelco Dolstra	1	-5/+7
	ostringstreams. Around 11% of execution time was spent here (now it's 0.5%).
2006-03-08	* Some refactoring of the exception handling code so that we can catch	Eelco Dolstra	2	-5/+16
	Nix expression assertion failures.
2006-03-01	* Ouch, parseHash32 was completely broken. All digits >= 4 were	Eelco Dolstra	1	-1/+1
	parsed as 4. For a moment I worried that printHash32 was broken, and that would have been really, really bad ;-)
2006-02-13	* Optional switch "--with-openssl=<PATH>" to use OpenSSL's	Eelco Dolstra	6	-40/+48
	implementations of MD5, SHA-1 and SHA-256. The main benefit is that we get assembler-optimised implementations of MD5 and SHA-1 (though not SHA-256 (at least on x86), unfortunately). OpenSSL's SHA-1 implementation on Intel is twice as fast as ours.
2006-02-13	* Use a union.	Eelco Dolstra	1	-2/+1

2006-02-01	* bsdiff updated to 4.3. This makes Nix depend on libbz2.	Eelco Dolstra	1	-1/+1

2006-01-09	* dirOf: return "/", not "", for paths in the root directory. Fixes NIX-26.	Eelco Dolstra	1	-2/+2

2006-01-08	* Resolve all symlink components in the location of the temporary	Eelco Dolstra	2	-4/+25
	build directory (TMPDIR, i.e., /tmp). Fixes NIX-26.
2005-12-15	* `nix-store --gc' prints out the number of bytes freed on stdout	Eelco Dolstra	2	-4/+17
	(even when it is interrupted by a signal).
2005-11-16	* Did something useful while waiting at IAD: reference scanning is now	Eelco Dolstra	2	-1/+7
	much faster.
2005-09-22	* Parse multi-valued options.	Eelco Dolstra	2	-0/+19

2005-07-22	* Build dynamic libraries.	Eelco Dolstra	1	-2/+2

2005-05-04	* FreeBSD 4.x doesn't have stdint.h, use inttypes.h instead (which is	Eelco Dolstra	3	-3/+3
	also part of ISO C).
2005-05-04	* The eof() state isn't guaranteed to be set non-lazily. GCC 2.95	Eelco Dolstra	1	-1/+1
	compatibility fix.
2005-03-24	* Create missing log and temproots directories automatically (reported	Eelco Dolstra	2	-0/+13
	by Rob).
2005-03-23	* Fix endianness bug.	Eelco Dolstra	1	-18/+18

2005-03-03	* Don't use fork() in copyPath(), but a string buffer.	Eelco Dolstra	1	-0/+3

2005-02-11	* Refactoring to support different installation sources in nix-env.	Eelco Dolstra	1	-0/+8
	* 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).
2005-02-09	* Automatically upgrade <= 0.7 Nix stores to the new schema (so that	Eelco Dolstra	2	-0/+12
	existing user environments continue to work). * `nix-store --verify': detect incomplete closures.
2005-02-01	* A GC setting `gc-keep-outputs' to specify whether output paths of	Eelco Dolstra	2	-0/+25
	derivations should be kept.
2005-02-01	* nix-build: use an indirection scheme to make it easier for users to	Eelco Dolstra	2	-0/+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.
2005-01-31	* Topologically sort paths under the references relation to ensure	Eelco Dolstra	1	-1/+0
	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	* Start of concurrent garbage collection. Processes write temporary	Eelco Dolstra	2	-4/+12
	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.
2005-01-27	* Make lock removal safe by signalling to blocked processes that the	Eelco Dolstra	2	-0/+10
	lock they are waiting on has become stale (we do this by writing a meaningless token to the unlinked file).
2005-01-20	* Another change to low-level derivations. The last one this year, I	Eelco Dolstra	1	-0/+2
	promise :-) This allows derivations to specify on what output paths of input derivations they are dependent. This helps to prevent unnecessary downloads. For instance, a build might be dependent on the `devel' and `lib' outputs of some library component, but not the `docs' output.
2005-01-17	* Removed the `id' attribute hack.	Eelco Dolstra	2	-6/+67
	* Formalise the notion of fixed-output derivations, i.e., derivations for which a cryptographic hash of the output is known in advance. Changes to such derivations should not propagate upwards through the dependency graph. Previously this was done by specifying the hash component of the output path through the `id' attribute, but this is insecure since you can lie about it (i.e., you can specify any hash and then produce a completely different output). Now the responsibility for checking the output is moved from the builder to Nix itself. A fixed-output derivation can be created by specifying the `outputHash' and `outputHashAlgo' attributes, the latter taking values `md5', `sha1', and `sha256', and the former specifying the actual hash in hexadecimal or in base-32 (auto-detected by looking at the length of the attribute value). MD5 is included for compatibility but should be considered deprecated. * Removed the `drvPath' pseudo-attribute in derivation results. It's no longer necessary. * Cleaned up the support for multiple output paths in derivation store expressions. Each output now has a unique identifier (e.g., `out', `devel', `docs'). Previously there was no way to tell output paths apart at the store expression level. * `nix-hash' now has a flag `--base32' to specify that the hash should be printed in base-32 notation. * `fetchurl' accepts parameters `sha256' and `sha1' in addition to `md5'. * `nix-prefetch-url' now prints out a SHA-1 hash in base-32. (TODO: a flag to specify the hash.)
2005-01-14	* Shorten SHA-256 hashes used in store path name generation to 160	Eelco Dolstra	2	-11/+85
	bits, then encode them in a radix-32 representation (using digits and letters except e, o, u, and t). This produces store paths like /nix/store/4i0zb0z7f88mwghjirkz702a71dcfivn-aterm-2.3.1. The nice thing about this is that the hash part of the file name is still 32 characters, as before with MD5. (Of course, shortening SHA-256 to 160 bits makes it no better than SHA-160 in theory, but hopefully it's a bit more resistant to attacks; it's certainly a lot slower.)
2005-01-14	* Start move towards SHA-256 hashes instead of MD5.	Eelco Dolstra	2	-1/+2
	* Start cleaning up unique store path generation (they weren't always unique; in particular the suffix ("-aterm-2.2", "-builder.sh") was not part of the hash, therefore changes to the suffix would cause multiple store objects with the same hash).
2005-01-14	* Add SHA-256.	Eelco Dolstra	6	-5/+904
	* Tests for the various hashes.
2005-01-14	* Removed some dead code.	Eelco Dolstra	2	-152/+1

2005-01-13	* Added SHA-1 support. `nix-hash' now has an option `--type sha1' to	Eelco Dolstra	5	-21/+471
	select SHA-1 hashing.
2005-01-13	* Refactoring to support SHA-1.	Eelco Dolstra	2	-11/+25

2004-11-08	* Fix broken format string.	Eelco Dolstra	1	-1/+1

2004-11-03	* string2ATerm -> overloaded toATerm.	Eelco Dolstra	2	-0/+17

2004-10-29	* Drop ATmake / ATMatcher also in handling store expressions.	Eelco Dolstra	4	-204/+0

2004-09-10	* Operation `--delete-generations' to delete generations of a	Eelco Dolstra	2	-0/+12
	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.
2004-09-09	* A very dirty hack to make setuid installations a bit nicer to use.	Eelco Dolstra	1	-0/+10
	Previously there was the problem that all files read by nix-env etc. should be reachable and readable by the Nix user. So for instance building a Nix expression in your home directory meant that the home directory should have at least g+x or o+x permission so that the Nix user could reach the Nix expression. Now we just switch back to the original user just prior to reading sources and the like. The places where this happens are somewhat arbitrary, however. Any scope that has a live SwitchToOriginalUser object in it is executed as the original user. * Back out r1385. setreuid() sets the saved uid to the new real/effective uid, which prevents us from switching back to the original uid. setresuid() doesn't have this problem (although the manpage has a bug: specifying -1 for the saved uid doesn't leave it unchanged; an explicit value must be specified).
2004-08-18	* The default verbosity level of all Nix commands is now lvlInfo.	Eelco Dolstra	1	-1/+1
	* Builder output is written to standard error by default. * The option `-B' is gone. * The option `-Q' suppresses builder output. The result of this is that most Nix invocations shouldn't need any flags w.r.t. logging.
2004-08-04	* Creating a file nix-support/no-scan in the output path of a	Eelco Dolstra	1	-1/+1
	derivation disables scanning for dependencies. Use at your own risk. This is a quick hack to speed up UML image generation (image are very big, say 1 GB). It would be better if the scanner were faster, and didn't read the whole file into memory.
2004-06-25	* A flag `--keep-going / -k' to keep building goals if one fails, as	Eelco Dolstra	1	-9/+8
	much as possible. (This is similar to GNU Make's `-k' flag.) * Refactoring to implement this: previously we just bombed out when a build failed, but now we have to clean up. In particular this means that goals must be freed quickly --- they shouldn't hang around until the worker exits. So the worker now maintains weak pointers in order not to prevent garbage collection. * Documented the `-k' and `-j' flags.
2004-06-22	* Some more diagnostics changes.	Eelco Dolstra	1	-2/+2

2004-06-22	* Put WEXITSTATUS stuff somewhere else.	Eelco Dolstra	2	-0/+8

2004-06-22	* Wrapper class around pids.	Eelco Dolstra	2	-0/+125

2004-06-22	* Refactoring.	Eelco Dolstra	2	-0/+18

2004-06-20	* Refactoring.	Eelco Dolstra	2	-0/+50

2004-06-15	* Refactoring.	Eelco Dolstra	2	-1/+39

2004-05-12	* An quick and dirty hack to support distributed builds.	Eelco Dolstra	2	-2/+11

2004-05-11	* Ignore interrupt signals while handling an exception.	Eelco Dolstra	1	-4/+15
	* Ignore EINTR in reads and writes.
2004-04-23	* Pass SYSTEM through config.h, and allow spaces.	Eelco Dolstra	2	-1/+3

2004-03-27	* Disallow the Nix store or any of its parents from being symlinks.	Eelco Dolstra	1	-5/+8
	This is because the contents of these symlinks are not incorporated into the hashes of derivations, and could therefore cause a mismatch between the build system and the target system. E.g., if `/nix/store' is a symlink to `/data/nix/store', then a builder could expand this path and store the result. If on the target system `/nix/store' is not a symlink, or is a symlink that points somewhere else, we have a dangling pointer. The trigger for this change is that gcc 3.3.3 does exactly that (it applies realpath() to some files, such as libraries, which causes our impurity checker to bail out.) An annoying side-effect of this change is that it makes it harder to move the Nix store to a different file system. On Linux, bind mounts can be used instead of symlink for this purpose (e.g., `mount -o bind /data/nix/store /nix/store').