lix -

Age	Commit message (Collapse)	Author
2011-12-15	* Refactoring: move sink/source buffering into separate classes.	Eelco Dolstra
	* Buffer the HashSink. This speeds up hashing a bit because it prevents lots of calls to the hash update functions (e.g. nix-hash went from 9.3s to 8.7s of user time on the closure of my /var/run/current-system).
2011-12-15	* Buffer reads in FdSource. Together with write buffering, this	Eelco Dolstra
	significantly cuts down the number of syscalls (e.g., for "nix-store -qR /var/run/current-system" via the daemon, it reduced the number of syscalls in the client from 29134 to 4766 and in the daemon from 44266 to 20666).
2011-12-14	* Buffer writes in FdSink. This significantly reduces the number of	Eelco Dolstra
	system calls / context switches when dumping a NAR and in the worker protocol.
2011-12-14	* Remove the terminate handler, which was only really needed because	Eelco Dolstra
	of Berkeley DB (see r8632).
2011-12-05	* Remove unnecessary quotes. showPaths() already adds quotes.	Eelco Dolstra

2011-12-02	* In ‘nix-store --verify --check-contents’, repair missing hashes	Eelco Dolstra
	rather than complain about them.
2011-12-02	* Move parseHash16or32 into libutil, and use in nix-hash.	Eelco Dolstra

2011-12-01	* Allow '<nixexpr>' syntax to be used in nix-instantiate, nix-build	Eelco Dolstra
	and nix-env, e.g., $ nix-env -f '<nixpkgs>' -i patchelf or $ nix-build '<nixos/tests>' -A login.test
2011-12-01	* Slight improvement.	Eelco Dolstra

2011-12-01	* When doing "nix-store --add-fixed" without "--recursive" via the Nix	Eelco Dolstra
	daemon (which is an error), print a nicer error message than "Connection reset by peer" or "broken pipe". * In the daemon, log errors that occur during request parameter processing.
2011-11-29	* Get rid of some superfluous error messages if a substituter fails.	Eelco Dolstra
	* Say "fetch" instead of "substitute".
2011-11-23	* Add an API function exportPaths() that provides the functionality of	Eelco Dolstra
	‘nix-store --export’. * Add a Perl module that provides the functionality of ‘nix-copy-closure --to’. This is used by build-remote.pl so it no longer needs to start a separate nix-copy-closure process. Also, it uses the Perl API to do the export, so it doesn't need to start a separate nix-store process either. As a result, nix-copy-closure and build-remote.pl should no longer fail on very large closures due to an "Argument list too long" error. (Note that having very many dependencies in a single derivation can still fail because the environment can become too large. Can't be helped though.)
2011-11-22	* Move initialisation of variables like nixConfDir from libmain to	Eelco Dolstra
	libstore so that the Perl bindings can use it as well. It's vital that the Perl bindings use the configuration file, because otherwise nix-copy-closure will fail with a ‘database locked’ message if the value of ‘use-sqlite-wal’ is changed from the default.
2011-11-21	nix: add /etc/hosts with localhost entry to chroot builds.	Rob Vermaas

2011-11-07	* Boldly make SQLite WAL mode the default again. Hopefully the	Eelco Dolstra
	intermittent problems are gone by now. WAL mode is preferrable because it does way fewer fsyncs.
2011-10-27	* In printValueAsXML, handle the case where a "type" attribute is not	Eelco Dolstra
	a string. This happens in the NixOS option system. * Remove a bogus comparison of a unsigned integer with -1.
2011-09-12	* Ouch. A store upgrade could cause a substituter to be triggered,	Eelco Dolstra
	causing a deadlock.
2011-09-06	* Added a command ‘nix-store --verify-paths PATHS’ to check whether	Eelco Dolstra
	the contents of any of the given store paths have been modified. E.g. $ nix-store --verify-path $(nix-store -qR /var/run/current-system) path `/nix/store/m2smyiwbxidlprfxfz4rjlvz2c3mg58y-etc' was modified! expected hash `fc87e271c5fdf179b47939b08ad13440493805584b35e3014109d04d8436e7b8', got `20f1a47281b3c0cbe299ce47ad5ca7340b20ab34246426915fce0ee9116483aa' All paths are checked; the exit code is 1 if any path has been modified, 0 otherwise.
2011-08-31	* Eliminate all uses of the global variable ‘store’ from libstore.	Eelco Dolstra
	This should also fix: nix-instantiate: ./../boost/shared_ptr.hpp:254: T* boost::shared_ptr<T>::operator->() const [with T = nix::StoreAPI]: Assertion `px != 0' failed. which was caused by hashDerivationModulo() calling the ‘store’ object (during store upgrades) before openStore() assigned it.
2011-08-06	* Cache the result of file evaluation (i.e, memoize evalFile()). This	Eelco Dolstra
	prevents files from being evaluated and stored as values multiple times. For instance, evaluation of the ‘system’ attribute in NixOS causes ‘nixpkgs/pkgs/lib/lists.nix’ to be evaluated 2019 times. Caching gives a modest speedup and a decent memory footprint reduction (e.g., from 1.44s to 1.28s, and from 81 MiB to 59 MiB with GC_INITIAL_HEAP_SIZE=100000 on my system).
2011-08-06	* Handle the case where the search path element is a regular file.	Eelco Dolstra

2011-08-06	* Remove a debug statement.	Eelco Dolstra

2011-08-06	* Add the Nix corepkgs to the end of the search path. This makes it	Eelco Dolstra
	possible for other Nix expressions to use corepkgs (mostly useful for the buildenv function).
2011-08-06	* Allow redirections in search path entries. E.g. if you have a	Eelco Dolstra
	directory /home/eelco/src/stdenv-updates that you want to use as the directory for import such as with (import <nixpkgs> { }); then you can say $ nix-build -I nixpkgs=/home/eelco/src/stdenv-updates
2011-08-06	* Add a Nix expression search path feature. Paths between angle	Eelco Dolstra
	brackets, e.g. import <nixpkgs/pkgs/lib> are resolved by looking them up relative to the elements listed in the search path. This allows us to get rid of hacks like import "${builtins.getEnv "NIXPKGS_ALL"}/pkgs/lib" The search path can be specified through the ‘-I’ command-line flag and through the colon-separated ‘NIX_PATH’ environment variable, e.g., $ nix-build -I /etc/nixos ... If a file is not found in the search path, an error message is lazily thrown.
2011-08-06	* Refactoring: move parseExprFromFile() and parseExprFromString() into	Eelco Dolstra
	the EvalState class.
2011-07-20	* Don't allow derivations with fixed and non-fixed outputs.	Eelco Dolstra

2011-07-20	* Fix a huuuuge security hole in the Nix daemon. It didn't check that	Eelco Dolstra
	derivations added to the store by clients have "correct" output paths (meaning that the output paths are computed by hashing the derivation according to a certain algorithm). This means that a malicious user could craft a special .drv file to build any desired path in the store with any desired contents (so long as the path doesn't already exist). Then the attacker just needs to wait for a victim to come along and install the compromised path. For instance, if Alice (the attacker) knows that the latest Firefox derivation in Nixpkgs produces the path /nix/store/1a5nyfd4ajxbyy97r1fslhgrv70gj8a7-firefox-5.0.1 then (provided this path doesn't already exist) she can craft a .drv file that creates that path (i.e., has it as one of its outputs), add it to the store using "nix-store --add", and build it with "nix-store -r". So the fake .drv could write a Trojan to the Firefox path. Then, if user Bob (the victim) comes along and does $ nix-env -i firefox $ firefox he executes the Trojan injected by Alice. The fix is to have the Nix daemon verify that derivation outputs are correct (in addValidPath()). This required some refactoring to move the hash computation code to libstore.
2011-07-18	* Support multiple outputs. A derivation can declare multiple outputs	Eelco Dolstra
	by setting the ‘outputs’ attribute. For example: stdenv.mkDerivation { name = "aterm-2.5"; src = ...; outputs = [ "out" "tools" "dev" ]; configureFlags = "--bindir=$(tools)/bin --includedir=$(dev)/include"; } This derivation creates three outputs, named like this: /nix/store/gcnqgllbh01p3d448q8q6pzn2nc2gpyl-aterm-2.5 /nix/store/gjf1sgirwfnrlr0bdxyrwzpw2r304j02-aterm-2.5-tools /nix/store/hp6108bqfgxvza25nnxfs7kj88xi2vdx-aterm-2.5-dev That is, the symbolic name of the output is suffixed to the store path (except for the ‘out’ output). Each path is passed to the builder through the corresponding environment variable, e.g., ${tools}. The main reason for multiple outputs is to allow parts of a package to be distributed and garbage-collected separately. For instance, most packages depend on Glibc for its libraries, but don't need its header files. If these are separated into different store paths, then a package that depends on the Glibc libraries only causes the libraries and not the headers to be downloaded. The main problem with multiple outputs is that if one output exists while the others have been garbage-collected (or never downloaded in the first place), and we want to rebuild the other outputs, then this isn't possible because we can't clobber a valid output (it might be in active use). This currently gives an error message like: error: derivation `/nix/store/1s9zw4c8qydpjyrayxamx2z7zzp5pcgh-aterm-2.5.drv' is blocked by its output paths There are two solutions: 1) Do the build in a chroot. Then we don't need to overwrite the existing path. 2) Use hash rewriting (see the ASE-2005 paper). Scary but it should work. This is not finished yet. There is not yet an easy way to refer to non-default outputs in Nix expressions. Also, mutually recursive outputs aren't detected yet and cause the garbage collector to crash.
2011-07-13	* Allow attribute names to be strings. Based on the	Eelco Dolstra
	allow-arbitrary-strinsg-in-names patch by Marc Weber.
2011-07-13	* Allow a default value in attribute selection by writing	Eelco Dolstra
	x.y.z or default (as originally proposed in https://mail.cs.uu.nl/pipermail/nix-dev/2009-September/002989.html). For instance, an expression like stdenv.lib.attrByPath ["features" "ckSched"] false args can now be written as args.features.ckSched or false
2011-07-06	* Change the right-hand side of the ‘.’ operator from an attribute to	Eelco Dolstra
	an attribute path. This is a refactoring to support default values.
2011-07-06	* In the ‘?’ operator, allow attribute paths. For instance, you can	Eelco Dolstra
	write ‘attrs ? a.b’ to test whether ‘attrs’ has an attribute ‘a’ containing an attribute ‘b’. This is more convenient than ‘attrs ? a && attrs.a ? b’. Slight change in the semantics: it's no longer an error if the left-hand side of ‘?’ is not an attribute set. In that case it just returns false. So, ‘null ? foo’ no longer throws an error.
2011-06-30	Add support for the `build-timeout' and `--timeout' options.	Ludovic Courtès

2011-04-19	* Handle error messages from the Nix worker containing the `%'	Eelco Dolstra
	character. (Nix/216)
2011-04-11	* `nix-env -ub' (`--prebuilt-only') didn't really work because it	Eelco Dolstra
	checked too soon whether substitutes are available. That is, it did so for every available package, rather than those matching installed packages. This was very slow and subject to assertion failures. So do the check much later. Idem for `nix-env -qab' and `nix-env -ib'.
2011-02-10	* Don't allocate a big initial GC address space on machines with	Eelco Dolstra
	little RAM. Even if the memory isn't actually used, it can cause problems with the overcommit heuristics in the kernel. So use a VM space of 25% of RAM, up to 384 MB.
2011-02-09	* Don't call GC_expand_hp unless we're actually using the garbage	Eelco Dolstra
	collector.
2011-02-09	Use $BDW_GC_LIBS instead of a custom variable.	Ludovic Courtès

2011-02-09	* Sync with the trunk.	Eelco Dolstra

2011-02-05	* Clang compatibility fix. Clang actually checks template definitions	Eelco Dolstra
	when they are defined
2011-01-14	Remove useless <config.h> inclusion from public header.	Ludovic Courtès

2011-01-14	* builtins.substring: if "start" is beyond the end of the string,	Eelco Dolstra
	return the empty string.
2010-12-17	* Do a short sleep after SQLITE_BUSY.	Eelco Dolstra

2010-12-17	* Propagate the "100" exit status for failed builds through the Nix	Eelco Dolstra
	daemon.
2010-12-14	* I forgot to catch SQLiteBusy in registerValidPaths(). So	Eelco Dolstra
	registerValidPaths() now handles busy errors and registerValidPath() is simply a wrapper around it.
2010-12-13	* nix-instantiate: return exit status 100 to denote a permanent build	Eelco Dolstra
	failure. The build hook can use this to distinguish between transient and permanent failures on the remote side.
2010-12-13	* Create /nix/var/nix/db if it's missing.	Eelco Dolstra

2010-12-13	* createDirs(path): if path already exists, make sure it's a	Eelco Dolstra
	directory. * Provide a C++ wrapper around lstat().
2010-12-13	* Update some comments.	Eelco Dolstra