depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2012-09-12	Build hook: Pass the timeout to the remote builder	Eelco Dolstra	1	-3/+4
	Note that this will only work if the client has a very recent Nix version (post 15e1b2c223494ecb5efefc3ea0e3b926a6b1d7dc), otherwise the --option flag will just be ignored. Fixes #50.
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
2012-09-11	Support building a derivation if some outputs are already valid	Eelco Dolstra	1	-11/+12
	This handles the chroot and build hook cases, which are easy. Supporting the non-chroot-build case will require more work (hash rewriting!). Issue #21.
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

2012-08-27	Merge branch 'master' into no-manifests	Eelco Dolstra	1	-6/+6

2012-08-24	Include the output name in the GC root link	Eelco Dolstra	1	-6/+6
	Output names are now appended to resulting GC symlinks, e.g. by nix-build. For backwards compatibility, if the output is named "out", nothing is appended. E.g. doing "nix-build -A foo" on a derivation that produces outputs "out", "bin" and "dev" will produce symlinks "./result", "./result-bin" and "./result-dev", respectively.
2012-08-01	nix-channel: Use binary caches advertised by channels	Eelco Dolstra	2	-17/+30
	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	3	-5/+8

2012-07-30	Get rid of $NIX_BINARY_CACHES	Eelco Dolstra	1	-3/+2
	You can use ‘--option binary-caches URLs’ instead.
2012-07-30	nix-install-package: Support binary caches	Eelco Dolstra	1	-10/+19
	The .nixpkg file format is extended to optionally include the URL of a binary cache, which will be used in preference to the manifest URL (which can be set to a non-existent value).
2012-07-27	Allow a binary cache to declare that it doesn't support "nix-env -qas"	Eelco Dolstra	2	-85/+121
	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	3	-20/+9
	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	2	-42/+30
	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	nix-push: Support generating a manifest again	Eelco Dolstra	1	-10/+34
	This makes all the tests succeed. Woohoo!
2012-07-26	nix-push: Remove the upload feature	Eelco Dolstra	1	-51/+24

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.
2012-07-26	Merge branch 'master' into no-manifests	Eelco Dolstra	2	-3/+7

2012-07-25	nix-profile.sh: Don't set NIX_REMOTE on single user installations	Eelco Dolstra	1	-1/+1
	Commit 6a214f3e06fa1c5f0a4d40e555f14d87691af297 reused the NixOS environment initialisation for nix-profile.sh, but this is inappropriate on systems that don't have multi-user support enabled.
2012-07-25	Subscribe to the Nixpkgs rather than NixOS channel	Eelco Dolstra	1	-2/+2

2012-07-23	nix-build: Support the ‘-’ argument to build an expression from stdin	Eelco Dolstra	1	-0/+4

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	Update the other substituters	Eelco Dolstra	2	-69/+70

2012-07-11	Add some missing --version switches	Eelco Dolstra	2	-0/+10

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.
2012-07-06	download-from-binary-cache: use WWW::Curl	Eelco Dolstra	1	-11/+68
	Using WWW::Curl rather than running an external curl process for every NAR info file halves the time it takes to get info thanks to libcurl's support for persistent HTTP connections. (We save a roundtrip per file.) But the real gain will come from using parallel and/or pipelined requests.
2012-07-03	download-from-binary-cache: do negative NAR info caching	Eelco Dolstra	1	-5/+29
	I.e. if a NAR info file does not exist, we record it in the cache DB so that we don't retry it later.
2012-07-03	download-from-binary-cache: in queries, preferred cached info	Eelco Dolstra	1	-20/+28

2012-07-03	download-from-binary-cache: strip trailing / from URLs	Eelco Dolstra	1	-1/+1

2012-07-03	download-from-binary-cache: cache binary cache info in a SQLite DB	Eelco Dolstra	1	-8/+117

2012-07-02	download-from-binary-cache: Verify NAR hashes	Eelco Dolstra	1	-6/+15

2012-07-02	nix-push: Always generate base-32 hashes	Eelco Dolstra	1	-2/+2

2012-07-02	Binary caches: use a better key	Eelco Dolstra	2	-8/+13
	Use the hash part of the store path as a key rather than a hash of the store path. This is enough to get the desired privacy property.
2012-07-01	Add an environment variable $NIX_BINARY_CACHES specifying URLs of binary caches	Eelco Dolstra	1	-2/+7

2012-07-01	Allow both bzip2 and xz compression	Eelco Dolstra	2	-25/+55

2012-06-29	nix-push: Don't pollute the current directory with result symlink	Eelco Dolstra	1	-1/+1

2012-06-29	First attempt at the manifest-less substituter	Eelco Dolstra	2	-5/+121

2012-06-29	Doh	Eelco Dolstra	1	-1/+1

2012-06-29	Use XZ compression in binary caches	Eelco Dolstra	1	-13/+13
	XZ compresses significantly better than bzip2. Here are the compression ratios and execution times (using 4 cores in parallel) on my /var/run/current-system (3.1 GiB): bzip2: total compressed size 849.56 MiB, 30.8% [2m08] xz -6: total compressed size 641.84 MiB, 23.4% [6m53] xz -7: total compressed size 621.82 MiB, 22.6% [7m19] xz -8: total compressed size 599.33 MiB, 21.8% [7m18] xz -9: total compressed size 588.18 MiB, 21.4% [7m40] Note that compression takes much longer. More importantly, however, decompression is much faster: bzip2: 1m47.274s xz -6: 0m55.446s xz -7: 0m54.119s xz -8: 0m52.388s xz -9: 0m51.842s The only downside to using -9 is that decompression takes a fair amount (~65 MB) of memory.