depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2012-08-27	Merge branch 'master' into no-manifests	Eelco Dolstra	7	-64/+103

2012-08-20	Check if MS_PRIVATE is defined	Eelco Dolstra	1	-1/+1
	http://hydra.nixos.org/build/2955671
2012-08-20	In the chroot, make all mounted filesystems private	Eelco Dolstra	1	-0/+18
	This is required on systemd, which mounts filesystems as "shared" subtrees. Changes to shared trees in a private mount namespace are propagated to the outside world, which is bad.
2012-08-20	Don't bind-mount /proc since we mount our own	Eelco Dolstra	1	-2/+2

2012-08-19	Fix 1755 permission on temporary directories left behind by ‘-K’	Eelco Dolstra	1	-4/+4

2012-08-07	Don't warn about maximum link count exceeded on 0-byte files	Eelco Dolstra	1	-2/+4

2012-08-05	Handle amount of disk space saved by hard linking being negative	Eelco Dolstra	1	-2/+2
	Fixes bogus messages like "currently hard linking saves 17592186044416.00 MiB".
2012-08-05	Fix race condition when two processes create a hard link to a file in .links	Eelco Dolstra	1	-27/+37
	This is a problem because one process may set the immutable bit before the second process has created its link. Addressed random Hydra failures such as: error: cannot rename `/nix/store/.tmp-link-17397-1804289383' to `/nix/store/rsvzm574rlfip3830ac7kmaa028bzl6h-nixos-0.1pre-git/upstart-interface-version': Operation not permitted
2012-08-05	Fix race condition when two processes create the same link in /nix/store/.links	Eelco Dolstra	1	-4/+4

2012-08-01	Count bytes freed deleting unused links	Eelco Dolstra	2	-3/+5

2012-08-01	Drop the block count in the garbage collector	Eelco Dolstra	5	-16/+9

2012-08-01	nix-store --gc: Make ‘--max-freed 0’ do the right thing	Eelco Dolstra	3	-6/+5
	That is, delete almost nothing (it will still remove unused links from /nix/store/.links).
2012-08-01	removeUnusedLinks(): Print stats on disk space saved by hard linking	Eelco Dolstra	1	-1/+16

2012-08-01	Merge branch 'master' into no-manifests	Eelco Dolstra	1	-1/+4

2012-08-01	Doh	Eelco Dolstra	1	-1/+2

2012-08-01	Make ‘nix-store --optimise’ interruptible	Eelco Dolstra	1	-0/+2

2012-08-01	Report substituter errors to clients of the Nix daemon	Eelco Dolstra	2	-22/+38

2012-07-31	Prevent an injection attack in passing untrusted options to substituters	Eelco Dolstra	1	-0/+4

2012-07-31	Pass all --option flags to the daemon	Eelco Dolstra	3	-3/+22

2012-07-31	Add an option ‘build-fallback’ (equivalent to the --fallback flag)	Eelco Dolstra	1	-1/+2

2012-07-30	Refactor settings processing	Eelco Dolstra	11	-428/+475
	Put all Nix configuration flags in a Settings object.
2012-07-30	Whitespace	Eelco Dolstra	2	-22/+22

2012-07-30	Pass configuration settings to the substituters	Eelco Dolstra	4	-5/+28
	Previously substituters could read nix.conf themselves, but this didn't take --option flags into account.
2012-07-30	Remove unused variables	Eelco Dolstra	2	-5/+0

2012-07-30	Fix whitespace	Eelco Dolstra	1	-71/+71

2012-07-27	Let build.cc verify the expected hash of a substituter's output	Eelco Dolstra	1	-6/+33
	Since SubstitutionGoal::finished() in build.cc computes the hash anyway, we can prevent the inefficiency of computing the hash twice by letting the substituter tell Nix about the expected hash, which can then verify it.
2012-07-27	Remove more tabs	Eelco Dolstra	1	-9/+9

2012-07-27	Remove trailing whitespace / tabs	Eelco Dolstra	1	-130/+130

2012-07-26	Fix the substituter tests	Eelco Dolstra	1	-1/+2

2012-07-26	Merge branch 'master' into no-manifests	Eelco Dolstra	13	-160/+199

2012-07-26	Set permissions on temporary build directories to 0700	Eelco Dolstra	1	-1/+2
	Fixes #39.
2012-07-23	Handle platforms that don't support linking to a symlink	Eelco Dolstra	1	-2/+7
	E.g. Darwin doesn't allow this.
2012-07-23	Unlink the right file	Eelco Dolstra	1	-2/+2

2012-07-23	Garbage collect unused links in /nix/store/.links	Eelco Dolstra	2	-0/+39
	Incremental optimisation requires creating links in /nix/store/.links to all files in the store. However, this means that if we delete a store path, no files are actually deleted because links in /nix/store/.links still exists. So we need to check /nix/store/.links for files with a link count of 1 and delete them.
2012-07-23	Automatically optimise the Nix store when a new path is added	Eelco Dolstra	4	-9/+31
	Auto-optimisation is enabled by default. It can be turned off by setting auto-optimise-store to false in nix.conf.
2012-07-23	optimiseStore(): Use a content-addressed file store in /nix/store/.links	Eelco Dolstra	2	-107/+108
	optimiseStore() now creates persistent, content-addressed hard links in /nix/store/.links. For instance, if it encounters a file P with hash H, it will create a hard link P' = /nix/store/.link/<H> to P if P' doesn't already exist; if P' exist, then P is replaced by a hard link to P'. This is better than the previous in-memory map, because it had the tendency to unnecessarily replace hard links with a hard link to whatever happened to be the first file with a given hash it encountered. It also allows on-the-fly, incremental optimisation.
2012-07-23	Use lutimes() if available to canonicalise the timestamp of symlinks	Eelco Dolstra	1	-9/+16
	Also use utimes() instead of utime() if lutimes() is not available.
2012-07-18	Use "#pragma once" to prevent repeated header file inclusion	Eelco Dolstra	9	-45/+9

2012-07-18	Merge branch 'master' into no-manifests	Eelco Dolstra	7	-15/+78

2012-07-17	Add function queryPathFromHashPart()	Eelco Dolstra	6	-0/+46
	To implement binary caches efficiently, Hydra needs to be able to map the hash part of a store path (e.g. "gbg...zr7") to the full store path (e.g. "/nix/store/gbg...kzr7-subversion-1.7.5"). (The binary cache mechanism uses hash parts as a key for looking up store paths to ensure privacy.) However, doing a search in the Nix store for /nix/store/<hash>* is expensive since it requires reading the entire directory. queryPathFromHashPart() prevents this by doing a cheap database lookup.
2012-07-17	Return an exit code of 100 for cached failed builds	Eelco Dolstra	1	-0/+1
	Exit code 100 should be returned for all permanent failures. This includes cached failures. Fixes #34.
2012-07-17	Update Nix 1.1 release notes	Eelco Dolstra	1	-0/+3

2012-07-17	Allow disabling log compression	Eelco Dolstra	1	-12/+25

2012-07-11	Update the other substituters	Eelco Dolstra	1	-2/+2

2012-07-11	Replace hasSubstitutes() with querySubstitutablePaths()	Eelco Dolstra	6	-18/+35
	querySubstitutablePaths() takes a set of paths, so this greatly reduces daemon <-> client latency.
2012-07-11	Add a function queryValidPaths()	Eelco Dolstra	6	-0/+34
	queryValidPaths() combines multiple calls to isValidPath() in one. This matters when using the Nix daemon because it reduces latency. For instance, on "nix-env -qas \*" it reduces execution time from 5.7s to 4.7s (which is indistinguishable from the non-daemon case).
2012-07-11	Rename queryValidPaths() to queryAllValidPaths()	Eelco Dolstra	7	-14/+14

2012-07-11	Implement querySubstitutablePathInfos() in the daemon	Eelco Dolstra	6	-47/+42
	Also removed querySubstitutablePathInfo().
2012-07-08	build.cc: Don't use hasSubstitute()	Eelco Dolstra	1	-11/+25
	Instead make a single call to querySubstitutablePathInfo() per derivation output. This is faster and prevents having to implement the "have" function in the binary cache substituter.
2012-07-06	download-from-binary-cache: parallelise fetching of NAR info files	Eelco Dolstra	8	-55/+154
	Getting substitute information using the binary cache substituter has non-trivial latency overhead. A package or NixOS system configuration can have hundreds of dependencies, and in the worst case (when the local info cache is empty) we have to do a separate HTTP request for each of these. If the ping time to the server is t, getting N info files will take tN seconds; e.g., with a ping time of 0.1s to nixos.org, sequentially downloading 1000 info files (a typical NixOS config) will take at least 100 seconds. To fix this problem, the binary cache substituter can now perform requests in parallel. This required changing the substituter interface to support a function querySubstitutablePathInfos() that queries multiple paths at the same time, and rewriting queryMissing() to take advantage of parallelism. (Due to local caching, parallelising queryMissing() is sufficient for most use cases, since it's almost always called before building a derivation and thus fills the local info cache.) For example, parallelism speeds up querying all 1056 paths in a particular NixOS system configuration from 116s to 2.6s. It works so well because the eccentricity of the top-level derivation in the dependency graph is only 9. So we only need 10 round-trips (when using an unlimited number of parallel connections) to get everything. Currently we do a maximum of 150 parallel connections to the server. Thus it's important that the binary cache server (e.g. nixos.org) has a high connection limit. Alternatively we could use HTTP pipelining, but WWW::Curl doesn't support it and libcurl has a hard-coded limit of 5 requests per pipeline.