lix -

Age	Commit message (Collapse)	Author
2012-07-18	download-from-binary-cache: Print correct URL	Eelco Dolstra

2012-07-18	Merge branch 'master' into no-manifests	Eelco Dolstra

2012-07-17	Add function queryPathFromHashPart()	Eelco Dolstra
	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	queryPathInfo(): return hash in base-32 if desired	Eelco Dolstra
	Cherry-picked from the no-manifests branch.
2012-07-17	Print some debug output	Eelco Dolstra

2012-07-17	Return an exit code of 100 for cached failed builds	Eelco Dolstra
	Exit code 100 should be returned for all permanent failures. This includes cached failures. Fixes #34.
2012-07-17	Remove dead code	Eelco Dolstra

2012-07-17	Manual: Don't claim we support Cygwin	Eelco Dolstra

2012-07-17	Update Nix 1.1 release notes	Eelco Dolstra

2012-07-17	Allow disabling log compression	Eelco Dolstra

2012-07-12	builtins.storePath: resolve symlinks	Eelco Dolstra
	Needed for Charon/Hydra interaction.
2012-07-11	Merge branch 'master' of github.com:NixOS/nix into no-manifests	Eelco Dolstra

2012-07-11	Update release notes	Eelco Dolstra

2012-07-11	Update the other substituters	Eelco Dolstra

2012-07-11	Add some missing --version switches	Eelco Dolstra

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

2012-07-11	download-from-binary-cache: Use HEAD requests if possible	Eelco Dolstra
	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	Replace hasSubstitutes() with querySubstitutablePaths()	Eelco Dolstra
	querySubstitutablePaths() takes a set of paths, so this greatly reduces daemon <-> client latency.
2012-07-11	Add a function queryValidPaths()	Eelco Dolstra
	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

2012-07-11	Implement querySubstitutablePathInfos() in the daemon	Eelco Dolstra
	Also removed querySubstitutablePathInfo().
2012-07-11	nix-env: Determine which paths have substitutes in parallel	Eelco Dolstra

2012-07-11	Cleanup	Eelco Dolstra

2012-07-09	Pass --insecure to curl so that https works	Eelco Dolstra

2012-07-09	Inline fetchurl.sh	Eelco Dolstra

2012-07-09	Add a test for the fetchurl function	Eelco Dolstra

2012-07-09	Remove obsolete comment	Shea Levy

2012-07-09	corepkgs/fetchurl: Build locally and outside of the chroot	Shea Levy

2012-07-09	corepkgs/fetchurl: the 'system' argument can be optional	Shea Levy

2012-07-09	corepkgs: distribute fetchurl files	Shea Levy

2012-07-09	corepkgs/fetchurl: Call the shell directly instead of using the shebang	Shea Levy

2012-07-09	corepkgs/fetchurl.sh: Use config.nix's curl	Shea Levy

2012-07-09	The fetchurl builder is now fetchurl.sh	Shea Levy

2012-07-09	Remove old fetchurl makefile	Shea Levy

2012-07-09	Move fetchurl files out of their subdirectory	Shea Levy

2012-07-09	corepkgs/config.nix.in: We'll need curl	Shea Levy

2012-07-09	Resurrect old corepkgs fetchurl	Shea Levy

2012-07-09	Really fix RPM builds	Eelco Dolstra

2012-07-09	Add WWW::Curl as a dependency	Eelco Dolstra

2012-07-09	Fix RPM builds	Eelco Dolstra
	http://hydra.nixos.org/build/2784908
2012-07-09	Get rid of nix.conf.example	Eelco Dolstra
	No need to duplicate the nix.conf manpage.
2012-07-09	Install a nix.conf manpage	Eelco Dolstra

2012-07-09	download-from-binary-cache: add nix.conf options	Eelco Dolstra

2012-07-09	prim_import(): prefetch substitute info in parallel using queryMissing()	Eelco Dolstra

2012-07-08	build.cc: Don't use hasSubstitute()	Eelco Dolstra
	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.
2012-07-08	Cleanup	Eelco Dolstra

2012-07-06	download-from-binary-cache: parallelise fetching of NAR info files	Eelco Dolstra
	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
	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
	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