depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2013-10-24	Fix segfault on Darwin	Eelco Dolstra	1	-0/+1
	Ever since SQLite in Nixpkgs was updated to 3.8.0.2, Nix has randomly segfaulted on Darwin: http://hydra.nixos.org/build/6175515 http://hydra.nixos.org/build/6611038 It turns out that this is because the binary cache substituter somehow ends up loading two versions of SQLite: the one in Nixpkgs and the other from /usr/lib/libsqlite3.dylib. It's not exactly clear why the latter is loaded, but it appears to be because WWW::Curl indirectly loads /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation, which in turn seems to load /usr/lib/libsqlite3.dylib. This leads to a segfault when Perl exits: #0 0x00000001010375f4 in sqlite3_finalize () #1 0x000000010125806e in sqlite_st_destroy () #2 0x000000010124bc30 in XS_DBD__SQLite__st_DESTROY () #3 0x00000001001c8155 in XS_DBI_dispatch () ... #14 0x0000000100023224 in perl_destruct () #15 0x0000000100000d6a in main () ... The workaround is to explicitly load DBD::SQLite before WWW::Curl.
2013-07-01	Add support for uncompressed NARs in binary caches	Eelco Dolstra	1	-3/+4
	Issue NixOS/hydra#102.
2013-06-20	Don't keep "disabled" substituters running	Eelco Dolstra	1	-4/+7
	For instance, it's pointless to keep copy-from-other-stores running if there are no other stores, or download-using-manifests if there are no manifests. This also speeds things up because we don't send queries to those substituters.
2013-06-07	download-from-binary-cache.pl: Respect $NIX_CONNECT_TIMEOUT	Eelco Dolstra	1	-0/+1

2013-06-07	Replace $NIX_DEBUG_SUBST with an option ‘debug-subst’	Eelco Dolstra	1	-1/+1
	Thus passing ‘--option debug-subst 1’ allows daemon users to turn on debug info and see what the substituter is doing.
2013-06-07	download-from-binary-cache.pl: Show if we're waiting for a URL	Eelco Dolstra	1	-3/+15
	Previously, if a binary cache is hanging/unreachable/slow, download-from-binary-cache.pl would also hang without any indication to the user. Now, if fetching a URL takes more than 5 seconds, it will print a message to that effect.
2013-06-05	download-from-binary-cache.pl: Fix race condition	Eelco Dolstra	1	-3/+4
	Fixes the error "DBD::SQLite::db do failed: column url is not unique".
2013-06-05	Update the default binary cache URL to cache.nixos.org	Eelco Dolstra	1	-1/+1

2013-06-04	download-from-binary-cache.pl: Treat a 403 error as a 404	Eelco Dolstra	1	-2/+2
	Amazon S3 returns HTTP status code 403 if a file doesn't exist and the user has no permission to list the contents of the bucket. So treat it as 404 (meaning it's cached in the NARExistence table).
2013-05-15	download-from-binary-cache.pl: Get rid of an uninitialized value warning	Eelco Dolstra	1	-1/+1
	Reported by Pablo Costa.
2013-05-07	Add option ‘extra-binary-caches’	Eelco Dolstra	1	-1/+10
	This allows providing additional binary caches, useful in scripts like Hydra's build reproduction scripts, in particular because untrusted caches are ignored.
2013-04-23	Fix --fallback with the binary cache substituter	Eelco Dolstra	1	-0/+1
	Reported by Peter Simons.
2013-04-23	Test NAR info caching	Eelco Dolstra	1	-4/+12

2013-01-02	Reinstate the http://nixos.org/binary-cache default for the binary-caches ↵	Eelco Dolstra	1	-2/+2
	setting
2012-12-21	download-from-binary-cache: Use the channels of the calling user rather than ↵	Eelco Dolstra	1	-1/+3
	root This should make live easier for single-user (non-daemon) installations. Note that when the daemon is used, the "calling user" is root so we're not using any untrusted caches.
2012-12-06	Set a long SQLite timeout in the binary cache substituter	Eelco Dolstra	1	-0/+2

2012-11-06	download-from-binary-cache: Try next cache if downloading a NAR fails	Eelco Dolstra	1	-1/+1

2012-11-06	Process binary caches in order of priority	Eelco Dolstra	1	-7/+14
	Binary caches can now specify a priority in their nix-cache-info file. The binary cache substituter checks caches in order of priority. This is to ensure that fast, static caches like nixos.org/binary-cache are processed before slow, dynamic caches like hydra.nixos.org.
2012-11-06	Add an option ‘use-binary-caches’	Eelco Dolstra	1	-0/+4
	This allows disabling the use of binary caches, e.g. $ nix-build ... --option use-binary-caches false Note that $ nix-build ... --option binary-caches '' does not disable all binary caches, since the caches defined by channels will still be used.
2012-11-06	Fix "Not an ARRAY reference" error	Eelco Dolstra	1	-1/+1
	It's a mystery why this error is not triggered in the build farm (e.g. http://hydra.nixos.org/build/3265602). Ah well.
2012-10-17	nix-push: Only generate and copy a NAR if it doesn't already exist	Eelco Dolstra	1	-40/+10
	This prevents unnecessary and slow rebuilds of NARs that already exist in the binary cache.
2012-10-11	download-from-binary-cache: Remove duplicate entries in trustedURLs	Eelco Dolstra	1	-1/+1

2012-10-02	Add operation ‘nix-store --repair-path’	Eelco Dolstra	1	-3/+4
	This operation allows fixing corrupted or accidentally deleted store paths by redownloading them using substituters, if available. Since the corrupted path cannot be replaced atomically, there is a very small time window (one system call) during which neither the old (corrupted) nor the new (repaired) contents are available. So repairing should be used with some care on critical packages like Glibc.
2012-09-21	Style fix	Eelco Dolstra	1	-1/+1

2012-09-13	Put a time-to-live on negative binary cache lookups	Eelco Dolstra	1	-3/+30
	Negative lookups are purged from the DB after a day, at most once per day. However, for non-"have" lookups (e.g. all except "nix-env -qas"), negative lookups are ignored after one hour. This is to ensure that you don't have to wait a day for an operation like "nix-env -i" to start using new binaries in the cache. Should probably make this configurable.
2012-09-13	Doh	Eelco Dolstra	1	-2/+2

2012-09-13	Delete manifests in "nix-channel --remove" or when a binary cache is available	Eelco Dolstra	1	-0/+1

2012-09-12	Compatibility fix for WWW::Curl < 4.14	Eelco Dolstra	1	-1/+2
	Older versions of WWW::Curl don't support scalar references for CURLOPT_WRITEDATA directly. http://hydra.nixos.org/build/3017188
2012-08-27	Disable the binary cache substituter by default for now	Eelco Dolstra	1	-3/+2

2012-08-27	Drop dependency on List::MoreUtils	Eelco Dolstra	1	-3/+2

2012-08-01	nix-channel: Use binary caches advertised by channels	Eelco Dolstra	1	-0/+10
	Channels can now advertise a binary cache by creating a file <channel-url>/binary-cache-url. The channel unpacker puts these in its "binary-caches" subdirectory. Thus, the URLS of the binary caches for the channels added by root appear in /nix/var/nix/profiles/per-user/eelco/channels/binary-caches/*. The binary cache substituter reads these and adds them to the list of binary caches.
2012-08-01	download-from-binary-cache: Remove duplicate URLs	Eelco Dolstra	1	-2/+2

2012-08-01	Report substituter errors to clients of the Nix daemon	Eelco Dolstra	1	-7/+3

2012-07-31	Allow daemon users to override ‘binary-caches’	Eelco Dolstra	1	-3/+27
	For security reasons, daemon users can only specify caches that appear in the ‘binary-caches’ and ‘trusted-binary-caches’ options in nix.conf.
2012-07-30	Do some validation of URLs	Eelco Dolstra	1	-2/+2

2012-07-30	Get rid of $NIX_BINARY_CACHES	Eelco Dolstra	1	-3/+2
	You can use ‘--option binary-caches URLs’ instead.
2012-07-27	Allow a binary cache to declare that it doesn't support "nix-env -qas"	Eelco Dolstra	1	-73/+101
	Querying all substitutable paths via "nix-env -qas" is potentially hard on a server, since it involves sending thousands of HEAD requests. So a binary cache must now have a meta-info file named "nix-cache-info" that specifies whether the server wants this. It also specifies the store prefix so that we don't send useless queries to a binary cache for a different store prefix.
2012-07-27	Let build.cc verify the expected hash of a substituter's output	Eelco Dolstra	1	-7/+4
	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	download-using-manifests: Don't use nix-prefetch-url	Eelco Dolstra	1	-1/+1
	Instead call curl directly and pipe it into ‘nix-store --restore’. This saves I/O and prevents creating garbage in the Nix store.
2012-07-27	Remove trailing whitespace / tabs	Eelco Dolstra	1	-17/+17

2012-07-27	download-from-binary-cache: Only use the default cache for /nix/store	Eelco Dolstra	1	-1/+3

2012-07-26	download-from-binary-cache: Support file://	Eelco Dolstra	1	-9/+14
	The file:// URI schema requires checking for errors in a more general way. Also, don't cache file:// lookups.
2012-07-18	download-from-binary-cache: Print correct URL	Eelco Dolstra	1	-2/+5

2012-07-17	Print some debug output	Eelco Dolstra	1	-8/+15

2012-07-11	Set the User-Agent header to "Nix/<version>"	Eelco Dolstra	1	-0/+1

2012-07-11	download-from-binary-cache: Use HEAD requests if possible	Eelco Dolstra	1	-12/+79
	In "nix-env -qas", we don't need the substitute info, we just need to know if it exists. This can be done using a HTTP HEAD request, which saves bandwidth. Note however that curl currently has a bug that prevents it from reusing HTTP connections if HEAD requests return a 404: https://sourceforge.net/tracker/?func=detail&aid=3542731&group_id=976&atid=100976 Without the patch attached to the issue, using HEAD is actually quite a bit slower than GET.
2012-07-11	Cleanup	Eelco Dolstra	1	-3/+3

2012-07-09	download-from-binary-cache: add nix.conf options	Eelco Dolstra	1	-3/+7

2012-07-08	Cleanup	Eelco Dolstra	1	-13/+13

2012-07-06	download-from-binary-cache: parallelise fetching of NAR info files	Eelco Dolstra	1	-76/+128
	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.