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2013-08-02 Add a unary integer negation operatorEelco Dolstra3-4/+11
This allows saying "-1" instead of "builtins.sub 0 1".
2013-08-02 Overload the ‘+’ operator to support integer additionEelco Dolstra3-15/+23
2013-07-31 nix-shell: Don't disable Automake dependency trackingEelco Dolstra1-1/+2
Nixpkgs' stdenv disables dependency tracking by default. That makes sense for one-time builds, but in an interactive environment we expect repeated "make" invocations to do the right thing.
2013-07-31 Test the delayed with a bit moreEelco Dolstra3-5/+8
2013-07-31 Make Env smallerEelco Dolstra2-21/+23
Commit 20866a7031ca823055a221653b77986faa167329 added a ‘withAttrs’ field to Env, which is annoying because it makes every Env structure bigger and we allocate millions of them. E.g. NixOS evaluation took 18 MiB more. So this commit squeezes ‘withAttrs’ into values[0]. Probably should use a union...
2013-07-31 Don't use NULLEelco Dolstra1-4/+2
2013-07-31 Avoid thunks when a fromWith var can be looked up without evaluationShea Levy2-8/+8
Signed-off-by: Shea Levy <shea@shealevy.com>
2013-07-31 Delay evaulation of `with` attrs until a variable lookup needs themShea Levy4-7/+40
Evaluation of attribute sets is strict in the attribute names, which means immediate evaluation of `with` attribute sets rules out some potentially interesting use cases (e.g. where the attribute names of one set depend in some way on another but we want to bring those names into scope for some values in the second set). The major example of this is overridable self-referential package sets (e.g. all-packages.nix). With immediate `with` evaluation, the only options for such sets are to either make them non-recursive and explicitly use the name of the overridden set in non-overridden one every time you want to reference another package, or make the set recursive and use the `__overrides` hack. As shown in the test case that comes with this commit, though, delayed `with` evaluation allows a nicer third alternative. Signed-off-by: Shea Levy <shea@shealevy.com>
2013-07-30 Detect stack overflowsEelco Dolstra3-1/+80
Previously, if the Nix evaluator gets a stack overflow due to a deep or infinite recursion in the Nix expression, the user gets an unhelpful message ("Segmentation fault") that doesn't indicate that the problem is in the user's code rather than Nix itself. Now it prints: error: stack overflow (possible infinite recursion) This only works on x86_64-linux and i686-linux. Fixes #35.
2013-07-30 killUser: Don't let the child kill itself on AppleShea Levy1-0/+13
The kill(2) in Apple's libc follows POSIX semantics, which means that kill(-1, SIGKILL) will kill the calling process too. Since nix has no way to distinguish between the process successfully killing everything and the process being killed by a rogue builder in that case, it can't safely conclude that killUser was successful. Luckily, the actual kill syscall takes a parameter that determines whether POSIX semantics are followed, so we can call that syscall directly and avoid the issue on Apple. Signed-off-by: Shea Levy <shea@shealevy.com>
2013-07-23 buildenv: remove special treatment of python filesFlorian Friesdorf1-3/+0
buildPythonPackage does not leave easy_install.pth and site.py anymore. A python package that leaves these files is broken. An exception to this is setuptoolsSite which packages setuptools' site.py. To include it into a buildenv, this patch is even needed, not just cosmetic.
2013-07-19 Add hacking notes plus a script for running nix-shellEelco Dolstra3-0/+54
2013-07-19 nix-shell: Set $IN_NIX_SHELLEelco Dolstra1-0/+2
This allows scripts to distinguish between a real build and a Nix shell.
2013-07-19 nix-shell: Set some environment variables also set by build.ccEelco Dolstra1-1/+3
Setting $NIX_STORE causes the purity checks in gcc/ld-wrapper to kick in, so that's why we unset $NIX_ENFORCE_PURITY.
2013-07-19 Rename ‘nix-build --run-env’ to ‘nix-shell’Eelco Dolstra7-92/+201
2013-07-19 nix-build --run-env: Add a ‘--pure’ flagEelco Dolstra2-3/+43
This causes the environment to be (almost) cleared, thus giving a shell that more closely resembled the actual Nix derivation.
2013-07-18 Revert "build-remote.pl: Enforce timeouts locally"Eelco Dolstra2-3/+6
This reverts commit 69b8f9980f39c14a59365a188b300a34d625a2cd. The timeout should be enforced remotely. Otherwise, if the garbage collector is running either locally or remotely, if will block the build or closure copying for some time. If the garbage collector takes too long, the build may time out, which is not what we want. Also, on heavily loaded systems, copying large paths to and from the remote machine can take a long time, also potentially resulting in a timeout.
2013-07-15 Allow bind-mounting regular files into the chrootShea Levy1-1/+9
mount(2) with MS_BIND allows mounting a regular file on top of a regular file, so there's no reason to only bind directories. This allows finer control over just which files are and aren't included in the chroot without having to build symlink trees or the like. Signed-off-by: Shea Levy <shea@shealevy.com>
2013-07-12 Fix syntax error in unpack-channelEelco Dolstra1-1/+1
2013-07-12 Garbage collector: Don't follow symlinks arbitrarilyEelco Dolstra5-47/+53
Only indirect roots (symlinks to symlinks to the Nix store) are now supported.
2013-07-12 Add gzip support for channel unpackingGergely Risko4-3/+8
2013-07-12 doc: typoDomen Kožar1-1/+1
2013-07-11 build-remote.pl: Move "building ..." message to a better placeEelco Dolstra1-1/+1
2013-07-11 nix-build --run-env: Always use BashEelco Dolstra1-1/+1
Fixes #113. Fixes #131.
2013-07-11 nix-build --run-env: Source $stdenv/setup in the interactive shellEelco Dolstra2-16/+26
This ensures that not just environment variables are set, but also shell functions such as unpackPhase, configurePhase and so on.
2013-07-07 Leave `HAVE_HUP_NOTIFICATION' undefined on GNU/Hurd.Ludovic Courtès1-2/+7
2013-07-03 Manual: auto-optimise-store is disabled by defaultEelco Dolstra1-5/+6
2013-07-01 Add support for uncompressed NARs in binary cachesEelco Dolstra6-17/+31
Issue NixOS/hydra#102.
2013-07-01 copy-from-other-stores.pl: Respect $NIX_BIN_DIREelco Dolstra1-4/+4
2013-07-01 copy-from-other-stores.pl: Report downloaded size as 0Eelco Dolstra1-1/+1
2013-06-20 Don't set $preferLocalBuild and $requiredSystemFeatures in buildersEelco Dolstra2-8/+15
With C++ std::map, doing a comparison like ‘map["foo"] == ...’ has the side-effect of adding a mapping from "foo" to the empty string if "foo" doesn't exist in the map. So we ended up setting some environment variables by accident.
2013-06-20 Don't substitute derivations that have preferLocalBuild setEelco Dolstra3-7/+15
In particular this means that "trivial" derivations such as writeText are not substituted, reducing the number of GET requests to the binary cache by about 200 on a typical NixOS configuration.
2013-06-20 Increase SQLite's auto-checkpoint intervalEelco Dolstra1-2/+2
Common operations like instantiating a NixOS system config no longer fitted in 8192 pages, leading to more fsyncs. So increase this limit.
2013-06-20 Disable the copy-from-other-stores substituterEelco Dolstra1-0/+2
This substituter basically cannot work reliably since we switched to SQLite, since SQLite databases may need write access to open them even just for reading (and in WAL mode they always do).
2013-06-20 Don't keep "disabled" substituters runningEelco Dolstra9-7/+46
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.
2013-06-17 Bump versionEelco Dolstra1-1/+1
2013-06-17 Update release notes for Nix 1.5.3Eelco Dolstra1-0/+48
2013-06-13 Allow hard links between the outputs of a derivationEelco Dolstra3-9/+20
2013-06-13 Fix a security bug in hash rewritingEelco Dolstra1-0/+6
Before calling dumpPath(), we have to make sure the files are owned by the build user. Otherwise, the build could contain a hard link to (say) /etc/shadow, which would then be read by the daemon and rewritten as a world-readable file. This only affects systems that don't have hard link restrictions enabled.
2013-06-13 Fix assertion failure in canonicalisePathMetaData() after hash rewritingEelco Dolstra1-2/+9
The assertion in canonicalisePathMetaData() failed because the ownership of the path already changed due to the hash rewriting. The solution is not to check the ownership of rewritten paths. Issue #122.
2013-06-13 computeFSClosure: Only process the missing/corrupt pathsEelco Dolstra1-11/+17
Issue #122.
2013-06-13 TypoEelco Dolstra1-1/+1
2013-06-13 In repair mode, update the hash of rebuilt pathsEelco Dolstra2-4/+5
Otherwise subsequent invocations of "--repair" will keep rebuilding the path. This only happens if the path content differs between builds (e.g. due to timestamps).
2013-06-12 nix-daemon: Trust options like binary-caches when the client is rootEelco Dolstra1-5/+7
Fixes #127.
2013-06-07 download-from-binary-cache.pl: Respect $NIX_CONNECT_TIMEOUTEelco Dolstra1-0/+1
2013-06-07 Replace $NIX_DEBUG_SUBST with an option ‘debug-subst’Eelco Dolstra1-1/+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 URLEelco Dolstra1-3/+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.
2013-06-07 Remove obsolete EOF checksEelco Dolstra1-26/+18
2013-06-07 Process stderr from substituters while doing have/info queriesEelco Dolstra4-9/+59
2013-06-07 Buffer reads from the substituterEelco Dolstra2-10/+27
This greatly reduces the number of system calls.
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