lix -

Age	Commit message (Collapse)	Author
2006-02-17	* In "nix-env -i", print a warning if there are multiple derivations	Eelco Dolstra
	with the same name and version number, and pick the first one (this means that the order in which channels appear in ~/.nix-channels matters). E.g.: $ nix-env ii aterm warning: there are multiple derivations named `aterm-2.4.2'; using the first one installing `aterm-2.4.2'
2006-02-17	* Fix for NIX-31: "nix-env -i foo" installing all derivations named	Eelco Dolstra
	foo. Now it will only install the one with the highest version number.
2006-02-17	* Fix the infamous NIX-17: nix-env -i prints misleading messages	Eelco Dolstra
	("installing `foo'" followed by "uninstalling `foo'").
2006-02-16	* Allow the size of the GC reserved file to be specified in nix.conf	Eelco Dolstra
	through the new `gc-reserved-space' option.
2006-02-16	* A simple hack to fix NIX-18: the garbage collector cannot run when	Eelco Dolstra
	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.
2006-02-13	* Optional switch "--with-openssl=<PATH>" to use OpenSSL's	Eelco Dolstra
	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

2006-02-13	* Override YYMALLOC and YYFREE so that we can call AT[un]protectMemory	Eelco Dolstra
	on the Bison parse stack. Otherwise, a garbage collect during parsing could lead to a crash.
2006-02-10	* Enable the --attr in nix-build as well (and add -A as an alias).	Eelco Dolstra
	Example: $ nix-build ./all-packages.nix -A xlibs.libX11 So finally it's easy to perform a test build of a Nix expression!
2006-02-10	* In nix-instantiate, allow us to specify a "path" to the	Eelco Dolstra
	derivation(s) we're interested, e.g., $ nix-instantiate ./all-packages.nix --attr xlibs.libX11 List elements can also be selected: $ nix-instantiate ./build-for-release.nix --attr 0.subversion This allows a non-ambiguous specification of a derivation. Of course, this should also be added to nix-env and nix-build.
2006-02-10	* Make --parse-only work when not reading from stdin.	Eelco Dolstra

2006-02-10	* Cleanup: use the code shared with nix-env.	Eelco Dolstra

2006-02-08	* When querying all derivations, filter out syntactically equal derivations.	Eelco Dolstra

2006-02-08	* When evaluating, automatically call functions with default arguments.	Eelco Dolstra

2006-02-08	* Oops, fix breakage.	Eelco Dolstra

2006-02-08	* Refactoring: move derivation evaluation to libexpr.	Eelco Dolstra

2006-02-03	* Use setsid instead of setpgrp in child processes. This not only	Eelco Dolstra
	creates a new process group but also a new session. New sessions have no controlling tty, so child processes like ssh cannot open /dev/tty (which is bad).
2006-02-02	* When killing a build hook, kill the entire process group (as	Eelco Dolstra
	intended). This ensures that any ssh child processes to remote machines are also killed, and thus the Nix process on the remote machine also exits. Without this, the remote Nix process will continue until it exists or until its stdout buffer gets full and it locks up. (Partially fixes NIX-35.)
2006-02-01	* Print a better error message when writing the patched file (e.g.,	Eelco Dolstra
	"No space left on device" instead of "Success"). Reported by Karina Olmos.
2006-02-01	* bsdiff updated to 4.3. This makes Nix depend on libbz2.	Eelco Dolstra

2006-02-01	* The "S" bit should be based on the output path, not the derivation path.	Eelco Dolstra

2006-01-26	* Oops, the "I" bit in "nix-env -qas" was broken. Reported by Nicolae Vintila.	Eelco Dolstra

2006-01-19	* Don't show cycles, they're not very useful.	Eelco Dolstra

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

2006-01-08	* Resolve all symlink components in the location of the temporary	Eelco Dolstra
	build directory (TMPDIR, i.e., /tmp). Fixes NIX-26.
2005-12-25	* More GCC 2.95 compatibility.	Eelco Dolstra

2005-12-25	* Hack around a GCC 2.95 bug.	Eelco Dolstra

2005-12-24	* GCC 2.95 compatibility.	Eelco Dolstra

2005-12-24	* Documentation fixes.	Eelco Dolstra

2005-12-23	* Added a flag `--ignore-liveness' to `nix-store --delete'. It	Eelco Dolstra
	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 the	Eelco Dolstra
	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 stdout	Eelco Dolstra
	(even when it is interrupted by a signal).
2005-12-15	* Split the database upgrade into multiple transactions to prevent	Eelco Dolstra
	Berkeley DB from running out of locks.
2005-12-13	* Change `referer' to `referrer' throughout. In particular, the	Eelco Dolstra
	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).
2005-12-12	* Automatically delete the old referers table.	Eelco Dolstra

2005-12-12	* Fix NIX-23: quadratic complexity in maintaining the referers	Eelco Dolstra
	mapping. The referer table is replaced by a referrer table (note spelling fix) that stores each referrer separately. That is, instead of having referer[P] = {Q_1, Q_2, Q_3, ...} we store referer[(P, Q_1)] = "" referer[(P, Q_2)] = "" referer[(P, Q_3)] = "" ... To find the referrers of P, we enumerate over the keys with a value lexicographically greater than P. This requires the referrer table to be stored as a B-Tree rather than a hash table. (The tuples (P, Q) are stored as P + null-byte + Q.) Old Nix databases are upgraded automatically to the new schema.
2005-12-09	* Use Berkeley DB 4.4's process registry feature to recover from	Eelco Dolstra
	crashed Nix instances, and toss out our own recovery code.
2005-12-06	* Require Berkeley DB 4.4.	Eelco Dolstra
	* Checkpoint after an upgrade.
2005-11-16	* Did something useful while waiting at IAD: reference scanning is now	Eelco Dolstra
	much faster.
2005-11-04	* Install signal handlers for SIGTERM and SIGHUP. This ensures that	Eelco Dolstra
	Nix is properly shut down when it receives those signals. In particular this ensures that killing the garbage collector doesn't cause a subsequent database recovery.
2005-11-04	* Memoise checkVarDefs since internally produced terms (i.e., not the	Eelco Dolstra
	result of parsing) can have very heavy sharing, causing exponential complexity if we naively recurse into them. ATerms are graphs, not trees!
2005-10-29	* Turn off build hooks in nix-push because of an impurity (NIX-21).	Eelco Dolstra

2005-10-29	* Repair the referers table from the references table.	Rob Vermaas

2005-10-20	* Prevent uids from being used for more than one build	Eelco Dolstra
	simultaneously. We do this using exclusive locks on uid files in /nix/var/nix/userpool, e.g., /nix/var/nix/userpool/123 for uid 123.
2005-10-19	* Oops. Fixed-output derivations were broken.	Eelco Dolstra

2005-10-17	* Also kill all processes of the build user after the build. This is	Eelco Dolstra
	critical to prevent certain kinds of 0wnage.
2005-10-17	* Before starting a build under some uid, kill all current processes	Eelco Dolstra
	running under that uid.
2005-10-17	* Check that the build result is owned by the build user, and that	Eelco Dolstra
	nobody else has write permission to the build result. This catches most hack attempts.
2005-10-17	* Don't use FIFOs to make Nix create the output path on behalf of the	Eelco Dolstra
	builder. Instead, require that the Nix store has sticky permission (S_ISVTX); everyone can created files in the Nix store, but they cannot delete, rename or modify files created by others.
2005-10-17	* Beginning of secure multi-user Nix stores. If Nix is started as	Eelco Dolstra
	root (or setuid root), then builds will be performed under one of the users listed in the `build-users' configuration variables. This is to make it impossible to influence build results externally, allowing locally built derivations to be shared safely between users (see ASE-2005 paper). To do: only one builder should be active per build user.