1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2024-09-20 23:28:26 -04:00
Commit graph

891 commits

Author SHA1 Message Date
Eelco Dolstra 1860070548
Merge branch 'rework-options' of https://github.com/copumpkin/nix 2017-04-13 16:15:51 +02:00
Shea Levy 3ecb09a40a builtins.exec: Make the argument just a list 2017-03-31 11:58:41 -04:00
Shea Levy 0bb8db257d Add exec primop behind allow-unsafe-native-code-during-evaluation.
Execute a given program with the (optional) given arguments as the
user running the evaluation, parsing stdout as an expression to be
evaluated.

There are many use cases for nix that would benefit from being able to
run arbitrary code during evaluation, including but not limited to:

* Automatic git fetching to get a sha256 from a git revision
* git rev-parse HEAD
* Automatic extraction of information from build specifications from
  other tools, particularly language-specific package managers like
  cabal or npm
* Secrets decryption (e.g. with nixops)
* Private repository fetching

Ideally, we would add this functionality in a more principled way to
nix, but in the mean time 'builtins.exec' can be used to get these
tasks done.

The primop is only available when the
'allow-unsafe-native-code-during-evaluation' nix option is true. That
flag also enables the 'importNative' primop, which is strictly more
powerful but less convenient (since it requires compiling a plugin
against the running version of nix).
2017-03-30 08:04:21 -04:00
Daiderd Jordan 023217f07c
use std::tuple for ValueMap allocator 2017-03-24 23:05:49 +01:00
Shea Levy 93f863be96 Add option to disable import-from-derivation completely, even if the drv is already realized 2017-03-08 08:46:12 -05:00
Eelco Dolstra ffcf9d24a6
builtins.fetchgit: Support paths 2017-03-02 11:46:28 +01:00
Eelco Dolstra fbf17f1ad7
builtins.fetchgit: Fix bad format string 2017-03-02 11:40:11 +01:00
Dan Peebles e7cb2847ab Explicitly model all settings and fail on unrecognized ones
Previously, the Settings class allowed other code to query for string
properties, which led to a proliferation of code all over the place making
up new options without any sort of central registry of valid options. This
commit pulls all those options back into the central Settings class and
removes the public get() methods, to discourage future abuses like that.

Furthermore, because we know the full set of options ahead of time, we
now fail loudly if someone enters an unrecognized option, thus preventing
subtle typos. With some template fun, we could probably also dump the full
set of options (with documentation, defaults, etc.) to the command line,
but I'm not doing that yet here.
2017-02-22 20:19:25 -05:00
Tuomas Tynkkynen 2cd468874f Include config.h implicitly with '-include config.h' in CFLAGS
Because config.h can #define things like _FILE_OFFSET_BITS=64 and not
every compilation unit includes config.h, we currently compile half of
Nix with _FILE_OFFSET_BITS=64 and other half with _FILE_OFFSET_BITS
unset. This causes major havoc with the Settings class on e.g. 32-bit ARM,
where different compilation units disagree with the struct layout.

E.g.:

diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
@@ -166,6 +166,8 @@ void Settings::update()
     _get(useSubstitutes, "build-use-substitutes");
+    fprintf(stderr, "at Settings::update(): &useSubstitutes = %p\n", &nix::settings.useSubstitutes);
     _get(buildUsersGroup, "build-users-group");
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -138,6 +138,8 @@ void RemoteStore::initConnection(Connection & conn)
 void RemoteStore::setOptions(Connection & conn)
 {
+    fprintf(stderr, "at RemoteStore::setOptions(): &useSubstitutes = %p\n", &nix::settings.useSubstitutes);
     conn.to << wopSetOptions

Gave me:

at Settings::update(): &useSubstitutes = 0xb6e5c5cb
at RemoteStore::setOptions(): &useSubstitutes = 0xb6e5c5c7

That was not a fun one to debug!
2017-02-08 21:51:02 +02:00
Eelco Dolstra 6de33a9c67
Add support for passing structured data to builders
Previously, all derivation attributes had to be coerced into strings
so that they could be passed via the environment. This is lossy
(e.g. lists get flattened, necessitating configureFlags
vs. configureFlagsArray, of which the latter cannot be specified as an
attribute), doesn't support attribute sets at all, and has size
limitations (necessitating hacks like passAsFile).

This patch adds a new mode for passing attributes to builders, namely
encoded as a JSON file ".attrs.json" in the current directory of the
builder. This mode is activated via the special attribute

  __structuredAttrs = true;

(The idea is that one day we can set this in stdenv.mkDerivation.)

For example,

  stdenv.mkDerivation {
    __structuredAttrs = true;
    name = "foo";
    buildInputs = [ pkgs.hello pkgs.cowsay ];
    doCheck = true;
    hardening.format = false;
  }

results in a ".attrs.json" file containing (sans the indentation):

  {
    "buildInputs": [],
    "builder": "/nix/store/ygl61ycpr2vjqrx775l1r2mw1g2rb754-bash-4.3-p48/bin/bash",
    "configureFlags": [
      "--with-foo",
      "--with-bar=1 2"
    ],
    "doCheck": true,
    "hardening": {
      "format": false
    },
    "name": "foo",
    "nativeBuildInputs": [
      "/nix/store/10h6li26i7g6z3mdpvra09yyf10mmzdr-hello-2.10",
      "/nix/store/4jnvjin0r6wp6cv1hdm5jbkx3vinlcvk-cowsay-3.03"
    ],
    "propagatedBuildInputs": [],
    "propagatedNativeBuildInputs": [],
    "stdenv": "/nix/store/f3hw3p8armnzy6xhd4h8s7anfjrs15n2-stdenv",
    "system": "x86_64-linux"
  }

"passAsFile" is ignored in this mode because it's not needed - large
strings are included directly in the JSON representation.

It is up to the builder to do something with the JSON
representation. For example, in bash-based builders, lists/attrsets of
string values could be mapped to bash (associative) arrays.
2017-01-26 20:40:33 +01:00
Eelco Dolstra 54801ed6ad
Bindings: Add a method for iterating in lexicographically sorted order 2017-01-26 20:40:33 +01:00
Eelco Dolstra 4e6a2fbc56
Revert "Propagate path context via builtins.readFile"
This reverts commit f7f0116dd7.

Issue #1174.
2017-01-24 15:31:54 +01:00
Eelco Dolstra fa738e50bc
Revert "builtins.readFile: Put the references of the file, not those needed to realize the file, into the context"
Reverting commit 451c223dee for now
because it breaks http://hydra.nixos.org/build/46805136, not clear
why.
2017-01-24 15:29:46 +01:00
Shea Levy 451c223dee builtins.readFile: Put the references of the file, not those needed to realize the file, into the context 2017-01-10 12:22:22 -05:00
Eelco Dolstra 603f08506e
Tweak error message 2016-12-06 17:18:40 +01:00
Guillaume Maudoux e4b82af387 Improve error message on trailing path slashes 2016-11-27 17:48:46 +01:00
Guillaume Maudoux a5e761dddb Fix comments parsing
Fixed the parsing of multiline strings ending with an even number of
stars, like /** this **/.
Added test cases for comments.
2016-11-13 17:20:34 +01:00
Tuomas Tynkkynen f0fc3dd88b Fix SIGFPE from integer overflow during division
On some architectures (like x86_64 or i686, but not ARM for example)
overflow during integer division causes a crash due to SIGFPE.
Reproduces on a 64-bit system with:

    nix-instantiate --eval -E '(-9223372036854775807 - 1) / -1'

The only way this can happen is when the smallest possible integer is
divided by -1, so just special-case that.
2016-10-26 18:41:59 +03:00
Alexander Ried c935e8eeaf fixup! replace own regex class with std::regex 2016-10-19 16:03:53 +02:00
Alexander Ried b05b98df75 replace own regex class with std::regex 2016-10-18 20:22:25 +02:00
Eelco Dolstra c55bf085eb printMsg(lvlError, ...) -> printError(...) etc. 2016-09-21 16:54:53 +02:00
Eelco Dolstra 90ad02bf62 Enable HTTP/2 support
The binary cache store can now use HTTP/2 to do lookups. This is much
more efficient than HTTP/1.1 due to multiplexing: we can issue many
requests in parallel over a single TCP connection. Thus it's no longer
necessary to use a bunch of concurrent TCP connections (25 by
default).

For example, downloading 802 .narinfo files from
https://cache.nixos.org/, using a single TCP connection, takes 11.8s
with HTTP/1.1, but only 0.61s with HTTP/2.

This did require a fairly substantial rewrite of the Downloader class
to use the curl multi interface, because otherwise curl wouldn't be
able to do multiplexing for us. As a bonus, we get connection reuse
even with HTTP/1.1. All downloads are now handled by a single worker
thread. Clients call Downloader::enqueueDownload() to tell the worker
thread to start the download, getting a std::future to the result.
2016-09-14 16:36:02 +02:00
Eelco Dolstra 92d917b71a Fix GC build 2016-08-30 13:12:12 +02:00
Eelco Dolstra c42d1acfeb forceBool(): Show position info 2016-08-29 19:37:19 +02:00
Eelco Dolstra 26d92017d3 Add builtin function "partition"
The implementation of "partition" in Nixpkgs is O(n^2) (because of the
use of ++), and for some reason was causing stack overflows in
multi-threaded evaluation (not sure why).

This reduces "nix-env -qa --drv-path" runtime by 0.197s and memory
usage by 298 MiB (in non-Boehm mode).
2016-08-29 19:36:54 +02:00
Eelco Dolstra c0a7b84748 nix path-info: Add --json flag
Also, factor out JSON generation from value-to-json.{cc,hh}, and
support producing indented JSON.
2016-08-29 17:29:24 +02:00
Shea Levy 9fa21765e7 callFunction: Copy functors to the heap
Normally it's impossible to take a reference to the function passed to
callFunction, so some callers (e.g. ExprApp::eval) allocate that value
on the stack. For functors, a reference to the functor itself may be
kept, so we need to have it on the heap.

Fixes #1045
2016-08-29 07:36:28 -04:00
Eelco Dolstra d74236d1f2 nix build: Use Nix search path
That is, unless --file is specified, the Nix search path is
synthesized into an attribute set. Thus you can say

  $ nix build nixpkgs.hello

assuming $NIX_PATH contains an entry of the form "nixpkgs=...". This
is more verbose than

  $ nix build hello

but is less ambiguous.
2016-08-23 17:11:19 +02:00
Eelco Dolstra 22d6e31fc6 Add a mechanism for derivation attributes to reference the derivation's outputs
For example, you can now say:

  configureFlags = "--prefix=${placeholder "out"} --includedir=${placeholder "dev"}";

The strings returned by the ‘placeholder’ builtin are replaced at
build time by the actual store paths corresponding to the specified
outputs.

Previously, you had to work around the inability to self-reference by doing stuff like:

  preConfigure = ''
    configureFlags+=" --prefix $out --includedir=$dev"
  '';

or rely on ad-hoc variable interpolation semantics in Autoconf or Make
(e.g. --prefix=\$(out)), which doesn't always work.
2016-08-17 17:19:32 +02:00
Eelco Dolstra ac841a4679 Merge pull request #1031 from abbradar/replacestrings-context
Allow contexted strings in replaceStrings
2016-08-16 12:47:20 +02:00
Nikolay Amiantov f1b8dd43be Allow contexted strings in replaceStrings 2016-08-16 13:20:56 +03:00
Shea Levy d52d391164 builtins.fetch{url,tarball}: Allow name attribute 2016-08-15 07:37:11 -04:00
Eelco Dolstra ee22a91ab8 makeFixedOutputPath(): Drop superfluous HashType argument 2016-07-26 21:25:52 +02:00
Eelco Dolstra 06bbfb6004 builtins.{fetchurl,fetchTarball}: Support a sha256 attribute
Also, allow builtins.{fetchurl,fetchTarball} in restricted mode if a
hash is specified.
2016-07-26 21:16:52 +02:00
Eelco Dolstra 7850d3d279 Make the store directory a member variable of Store 2016-06-01 16:24:17 +02:00
Eelco Dolstra 6c75cf69c3 Cleanup: Remove singleton() 2016-05-04 16:16:53 +02:00
Eelco Dolstra d8bf0d4859 Support Git repos in the Nix path
E.g.

  $ nix-build -I nixpkgs=git://github.com/NixOS/nixpkgs '<nixpkgs>' -A hello

This is not extremely useful yet because you can't specify a
branch/revision.
2016-04-29 21:07:47 +02:00
Eelco Dolstra 38539b943a Add fetchgit builtin
The function builtins.fetchgit fetches Git repositories at evaluation
time, similar to builtins.fetchTarball. (Perhaps the name should be
changed, being confusing with respect to Nixpkgs's fetchgit function,
with works at build time.)

Example:

  (import (builtins.fetchgit git://github.com/NixOS/nixpkgs) {}).hello

or

  (import (builtins.fetchgit {
    url = git://github.com/NixOS/nixpkgs-channels;
    rev = "nixos-16.03";
  }) {}).hello

Note that the result does not contain a .git directory.
2016-04-29 20:47:36 +02:00
Eelco Dolstra 41633f9f73 Improved logging abstraction
This also gets rid of --log-type, since the nested log type isn't
useful in a multi-threaded situation, and nobody cares about the
"pretty" log type.
2016-04-25 19:18:45 +02:00
Eelco Dolstra 31a1a8ed3c Merge pull request #815 from vcunat/p/outputsToInstall
nix-env: respect meta.outputsToInstall
2016-04-14 20:55:41 +02:00
Eelco Dolstra 5169a6da98 Make $NIX_PATH parsing more robust 2016-04-14 17:29:08 +02:00
Eelco Dolstra 363f37d084 Make the search path lazier with non-fatal errors
Thus, -I / $NIX_PATH entries are now downloaded only when they are
needed for evaluation. An error to download an entry is a non-fatal
warning (just like non-existant paths).

This does change the semantics of builtins.nixPath, which now returns
the original, rather than resulting path. E.g., before we had

  [ { path = "/nix/store/hgm3yxf1lrrwa3z14zpqaj5p9vs0qklk-nixexprs.tar.xz"; prefix = "nixpkgs"; } ... ]

but now

  [ { path = "https://nixos.org/channels/nixos-16.03/nixexprs.tar.xz"; prefix = "nixpkgs"; } ... ]

Fixes #792.
2016-04-14 15:32:24 +02:00
Eelco Dolstra 12b257f045 Make primop registration pluggable
This way we don't have to put all primops in one giant file.
2016-04-14 12:50:01 +02:00
Nikolay Amiantov f7f0116dd7 Propagate path context via builtins.readFile 2016-03-04 14:04:51 +03:00
Eelco Dolstra e9c50064b5 Add an HTTP binary cache store
Allowing stuff like

  NIX_REMOTE=https://cache.nixos.org nix-store -qR /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1

or

  NIX_REMOTE=https://cache.nixos.org nix-store --export /nix/store/x1p1gl3a4kkz5ci0nfbayjqlqmczp1kq-geeqie-1.1 | nix-store --import
2016-02-29 18:15:20 +01:00
Scott Olson 6498adb002 Throw a specific error for incomplete parse errors.
`nix-repl` will use this for deciding whether to keep waiting for input or
error out right away.
2016-02-24 04:32:21 -06:00
Vladimír Čunát 03cbb9ad59 nix-env: respect meta.outputsToInstall
Discussed on https://github.com/NixOS/nixpkgs/pull/12653#discussion_r51601849
2016-02-23 14:19:14 +01:00
Eelco Dolstra 7a173a7be1 JSONObject: Support floats and booleans 2016-02-19 14:24:04 +01:00
Eelco Dolstra e03d6e0998 Fix broken number parsing in fromJSON
The call to tmp_number.append had its arguments mixed up. Also, JSON
does not allow a trailing "," after array/object members.
2016-02-15 15:01:26 +01:00
Eelco Dolstra b3e8d72770 Merge pull request #762 from ctheune/ctheune-floats
Implement floats
2016-02-12 12:49:59 +01:00
Eelco Dolstra fa7cd5369b StoreAPI -> Store
Calling a class an API is a bit redundant...
2016-02-04 14:48:42 +01:00
Eelco Dolstra c10c61449f Eliminate the "store" global variable
Also, move a few free-standing functions into StoreAPI and Derivation.

Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
2016-02-04 14:28:26 +01:00
Eelco Dolstra 5d8b7eb3e1 Revert "Revert "next try for "don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751"""
This reverts commit b669d3d2e8.
2016-01-20 16:34:42 +01:00
Eelco Dolstra b669d3d2e8 Revert "next try for "don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751""
This reverts commit ed23c8568e. Let's
merge this *after* the 1.11.1 release.
2016-01-20 00:05:28 +01:00
Fabian Schmitthenner ed23c8568e next try for "don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751"
This reverts commit 8120b6fb8a and fixes the regression introduced in
8d22b26448.
2016-01-19 20:35:35 +00:00
Eelco Dolstra 8120b6fb8a Revert "don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751"
This reverts commit 8d22b26448. It
breaks Nixpkgs:

$ nix-env -qa
error: syntax error, unexpected IND_STR, expecting '}', at /home/eelco/Dev/nixpkgs-stable/pkgs/top-level/python-packages.nix:7605:8
2016-01-19 20:33:32 +01:00
Fabian Schmitthenner 8d22b26448 don't abort when given unmatched '}' with 'start-condition stack underflow'. This fixes #751 2016-01-12 20:40:41 +00:00
Eelco Dolstra 9aac1861f7 Fix some signedness warnings 2016-01-07 14:37:39 +01:00
Christian Theune 934642155c @eelco's feedback: downgrade to regular float for size, remove unused function. 2016-01-06 08:25:58 +01:00
Fabian Schmitthenner 39d1da7b51 Better error message
Also show types when nix cannot compare values of different types.
This is also more consistent since types are already shown when comparing values of the same not comparable type.
2016-01-05 14:13:54 +01:00
Shea Levy 14080f3e4b Use __toString when coercing sets to strings.
For example, "${{ foo = "bar"; __toString = x: x.foo; }}" evaluates
to "bar".

With this, we can delay calling functions like mkDerivation,
buildPythonPackage, etc. until we actually need a derivation, enabling
overrides and other modifications to happen by simple attribute set
update.
2016-01-05 13:55:06 +01:00
Vladimír Čunát 29c0199d5c manual: document builtins.functionArgs
The text is just a conversion of comment from src/libexpr/primops.cc
2016-01-05 13:29:17 +01:00
Christian Theune a12a43046b Edge condition: parser did not pick up floats starting exactly with 0. 2016-01-05 09:54:49 +01:00
Christian Theune f872262e08 Fix up float parsing. 2016-01-05 09:46:37 +01:00
Christian Theune 494fc5acbb Try a simplified version of float lexing that didn't work.
The last one I tried was botchered anyway ...
2016-01-05 00:53:22 +01:00
Christian Theune 14ebde5289 First hit at providing support for floats in the language. 2016-01-05 00:40:40 +01:00
Eelco Dolstra a9faa7bbce showId: Handle empty attribute names
We should probably disallow these, but until then, we shouldn't barf
with an assertion failure.

Fixes #738.
2015-12-17 15:15:28 +01:00
Shea Levy f327970129 Merge branch 'auto-call-functor'
autoCallFunction now auto-calls functors
2015-11-25 11:57:31 -05:00
Shea Levy 9533532ce2 autoCallFunction: Auto-call functors 2015-11-25 11:56:14 -05:00
Eelco Dolstra cad40adce5 Merge pull request #704 from ysangkok/freebsd-support
FreeBSD support with knowledge about Linux emulation
2015-11-24 19:24:21 +01:00
Eelco Dolstra 5c28943e8f int2String() -> std::to_string() 2015-10-29 13:26:55 +01:00
Eelco Dolstra 51cf4455b2 isFunctor: Simplify 2015-10-08 13:22:11 +02:00
Mathnerd314 8a87521636 forceFunction: allow functors as well 2015-10-08 13:19:44 +02:00
Manuel Jacob 12c1776df9 Don't try to link libdl on FreeBSD.
There is no libdl on FreeBSD.  Instead the symbols are included in libc.
2015-10-06 22:28:30 +02:00
Eelco Dolstra 4ba6bc184c Shut up clang warnings 2015-09-18 01:22:35 +02:00
Iwan Aucamp 3db950aab7 Removed unnecessary included 2015-08-03 11:48:34 +02:00
Eelco Dolstra 2bac04c5ff Fix stack consumption 2015-07-31 20:28:25 +02:00
Iwan Aucamp 75837651f1 Output line number on infinite recursion 2015-07-31 20:26:44 +02:00
Eelco Dolstra 76cc8e97a2 Add sort primop 2015-07-28 18:39:39 +02:00
Eelco Dolstra 50807f3dd5 Add primop genList
This can be used to implement functions like ‘imap’ (or for that
matter, ‘map’) without the quadratic complexity incurred by calling
‘++’ repeatedly.
2015-07-28 17:28:35 +02:00
Eelco Dolstra d6d5885c15 Add replaceStrings primop
This is a generalisation of replaceChars in Nixpkgs.
2015-07-24 15:32:24 +02:00
Eelco Dolstra 2e8fd4c5cd Add concatStringsSep as a primop
This fixes the quadratic behaviour of concatStrings/concatStringsSep
in Nixpkgs.
2015-07-24 02:38:09 +02:00
Eelco Dolstra cb4320c1a0 Cleanup 2015-07-23 23:14:07 +02:00
Eelco Dolstra c8bb2371eb Optimize empty sets
This reduces the number of Bindings allocations by about 10%.
2015-07-23 23:11:08 +02:00
Eelco Dolstra 19eddecc0f Merge branch 'attr-set-hh' of https://github.com/nbp/nix
Conflicts:
	src/libexpr/eval.cc
2015-07-23 22:16:01 +02:00
Eelco Dolstra b83801f8b3 Optimize small lists
The value pointers of lists with 1 or 2 elements are now stored in the
list value itself. In particular, this makes the "concatMap (x: if
cond then [(f x)] else [])" idiom cheaper.
2015-07-23 22:05:09 +02:00
Eelco Dolstra 14be783676 Add primops all and any
These are used thousands of times during NixOS evaluation, so it's
useful to speed them up.
2015-07-23 19:23:11 +02:00
Shea Levy 39e27a04b8 Importing derivations: Add name attribute to make a valid drv 2015-07-23 17:04:07 +02:00
Shea Levy 1ed55234d9 Allow derivations-as-srcs in the context of builtins.toFile files 2015-07-23 17:03:47 +02:00
Eelco Dolstra 61af14a921 Add foldl' primop 2015-07-23 17:03:02 +02:00
Eelco Dolstra 0a2bee307b Make <nix/fetchurl.nix> a builtin builder
This ensures that 1) the derivation doesn't change when Nix changes;
2) the derivation closure doesn't contain Nix and its dependencies; 3)
we don't have to rely on ugly chroot hacks.
2015-07-20 04:38:46 +02:00
Eelco Dolstra 6bd2c7bb38 OCD: foreach -> C++11 ranged for 2015-07-17 20:13:56 +02:00
Eelco Dolstra f39979c6d3 Make printValue() interruptible
Fixes #572.
2015-07-17 11:33:39 +02:00
Nicolas B. Pierron db21cfa688 Move attribute set data structures into their own header file.
This modification moves Attr and Bindings structures into their own header
file which is dedicated to the attribute set representation. The goal of to
isolate pieces of code which are related to the attribute set
representation. Thus future modifications of the attribute set
representation will only have to modify these files, and not every other
file across the evaluator.
2015-07-14 19:23:17 +02:00
Guillaume Maudoux 467977f203 Fix the parsing of "$"'s in strings. 2015-07-03 14:09:58 +02:00
Guillaume Maudoux 65e4dcd69b Fix the hack that resets the scanner state. 2015-07-03 13:53:36 +02:00
Eelco Dolstra 65f17cd330 Support URLs in $NIX_PATH
This didn't work (despite claims in the manual), because the colon in
"http://" was parsed as a element separator. So handle "://"
specially.
2015-06-17 16:20:11 +02:00
Eelco Dolstra bc51175dc0 Add tarball tests 2015-06-01 16:18:23 +02:00
Eelco Dolstra da196ec68f Document tarball downloading 2015-06-01 15:14:44 +02:00
Eelco Dolstra c1323b53e3 Fix fetchurl/fetchTarball 2015-06-01 15:08:09 +02:00
Eelco Dolstra 1c88e100e7 readFile: Check against nul bytes 2015-06-01 15:07:42 +02:00
Eelco Dolstra 920f5fd4dd Fix import-from-derivation in restricted eval mode
This relaxes restricted mode to allow access to anything in the
store. In the future, it would be better to allow access to only paths
that have been constructed in the current evaluation (so a hard-coded
/nix/store/blabla in a Nix expression would still be
rejected). However, note that reading /nix/store itself is still
rejected, so you can't use this so get access to things you don't know
about.
2015-05-22 12:18:23 +02:00
Eelco Dolstra 6519f06f39 nix-env/nix-instantiate/nix-build: Support URIs
For instance, you can install Firefox from a specific Nixpkgs revision
like this:

  $ nix-env -f 63def04891.tar.gz -iA firefox

Or build a package from the latest nixpkgs-unstable channel:

  $ nix-build https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz -A hello
2015-05-06 14:54:31 +02:00
Eelco Dolstra 9451ef3731 Allow URLs in the Nix search path
E.g. to install "hello" from the latest Nixpkgs:

  $ nix-build '<nixpkgs>' -A hello -I nixpkgs=https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz

Or to install a specific version of NixOS:

  $ nixos-rebuild switch -I nixpkgs=63def04891.tar.gz
2015-05-05 17:09:42 +02:00
Eelco Dolstra 35d30d67eb Make downloads interruptable 2015-05-05 14:39:48 +02:00
Eelco Dolstra 035aeb9547 Fix using restricted mode with chroots 2015-04-16 18:46:17 +02:00
Eelco Dolstra 4ed2187377 Use cached result if there is a network error 2015-04-09 12:49:13 +02:00
Eelco Dolstra 1fc905ad4c Move curl stuff into a separate file 2015-04-09 12:12:50 +02:00
Eelco Dolstra c1f04fae35 Implement a TTL on cached fetchurl/fetchTarball results
This is because we don't want to do HTTP requests on every evaluation,
even though we can prevent a full redownload via the cached ETag. The
default is one hour.
2015-04-09 11:55:36 +02:00
Eelco Dolstra 60340ce3e2 Implement caching of fetchurl/fetchTarball results
ETags are used to prevent redownloading unchanged files.
2015-04-09 11:42:04 +02:00
Eelco Dolstra 000b5a000f Add fetchTarball builtin
This function downloads and unpacks the given URL at evaluation
time. This is primarily intended to make it easier to deal with Nix
expressions that have external dependencies. For instance, to fetch
Nixpkgs 14.12:

  with import (fetchTarball https://github.com/NixOS/nixpkgs-channels/archive/nixos-14.12.tar.gz) {};

Or to fetch a specific revision:

  with import (fetchTarball 2766a4b44e.tar.gz) {};

This patch also adds a ‘fetchurl’ builtin that downloads but doesn't
unpack its argument. Not sure if it's useful though.
2015-03-25 17:29:09 +01:00
Eelco Dolstra 7ea6ecf855 addToStore(): Take explicit name argument 2015-03-25 17:06:12 +01:00
Eelco Dolstra 6f0c6e20e0 Don't rely on __noChroot for corepkgs
This doesn't work anymore if the "strict" chroot mode is
enabled. Instead, add Nix's store path as a dependency. This ensures
that its closure is present in the chroot.
2015-03-24 11:15:45 +01:00
Eelco Dolstra b005e63ccf Disable scanning for interior pointers
This may remove the "Repeated allocation of very large block"
warnings.
2015-03-19 20:10:08 +01:00
Eelco Dolstra 726f7f7fc9 Fix Boehm API violation
We were calling GC_INIT() after doing an allocation (in the baseEnv
construction), which is not allowed.
2015-03-19 20:02:37 +01:00
Eelco Dolstra da6b704b19 Check return values from malloc/strdup 2015-03-19 14:11:35 +01:00
Eelco Dolstra fa47279440 Print some Boehm GC stats 2015-03-18 16:24:54 +01:00
Eelco Dolstra 7a84143910 valueSize(): Take into account list/bindings/env size 2015-03-18 14:41:28 +01:00
Daniel Hahler e659978ced Fix typos: s/the the/the/ 2015-03-06 16:43:22 +01:00
Eelco Dolstra 17c71334e1 forceValueDeep: Add to error prefix 2015-03-06 15:10:12 +01:00
Eelco Dolstra 5badc8f975 Improve error message 2015-03-06 14:24:08 +01:00
Eelco Dolstra 15d2d3c34e Add restricted evaluation mode
If ‘--option restrict-eval true’ is given, the evaluator will throw an
exception if an attempt is made to access any file outside of the Nix
search path. This is primarily intended for Hydra, where we don't want
people doing ‘builtins.readFile ~/.ssh/id_dsa’ or stuff like that.
2015-02-23 15:54:31 +01:00
Eelco Dolstra c33244d7c1 Merge branch 'tilde-paths' of https://github.com/shlevy/nix 2015-02-19 14:55:06 +01:00
Shea Levy c4653afbcd tilde paths: The rest of the string has to start with a slash anyway 2015-02-19 08:52:13 -05:00
Shea Levy e3e38a048e tilde paths: construct the entire path at parse time 2015-02-19 08:51:21 -05:00
Shea Levy 4b7c9f834c tilde paths: get HOME at parse time 2015-02-19 08:49:10 -05:00
Eelco Dolstra 9bedd9b09b Remove obsolete reference to ~ operator 2015-02-19 14:41:22 +01:00
Shea Levy 4646e94610 ExprConcatStrings: canonicalize concatenated paths 2015-02-19 08:39:25 -05:00
Shea Levy e0953d53de Allow the leading component of a path to be a ~ 2015-02-19 08:05:16 -05:00
Eelco Dolstra 2be7f79fd4 Remove tab 2015-02-05 17:21:30 +01:00
Shea Levy 73bf32ce94 Merge remote-tracking branch 'shlevy/baseNameOf-no-copy'
baseNameOf: Don't copy paths to the store first
2015-01-29 03:29:09 -05:00
Eelco Dolstra c2a8b5c42d Fix assertion failure in nix-env
$ nix-env -f ~/Dev/nixops/ -iA foo
  nix-env: src/libexpr/eval.hh:57: void nix::Bindings::push_back(const nix::Attr&): Assertion `size_ < capacity' failed.
  Aborted
2015-01-15 12:15:22 +01:00
Eelco Dolstra 2a3b1df423 Fix builtins.readDir on XFS
The DT_UNKNOWN fallback code was getting the type of the wrong path,
causing readDir to report "directory" as the type of every file.

Reported by deepfire on IRC.
2015-01-09 14:56:25 +01:00
Eelco Dolstra 153a943de7 Show position info for failing <...> lookups 2015-01-07 13:43:55 +01:00
Eelco Dolstra 6fec43ccb3 Remove quotes around filenames in position info 2015-01-07 12:08:10 +01:00
Eelco Dolstra 4e0607369e Pedantry 2014-12-14 01:51:14 +01:00
Eelco Dolstra 8aedaf111e Remove canary stuff 2014-12-12 10:59:50 +01:00
Shea Levy 50c3352811 builtins.readFile: realise context associated with the path 2014-12-10 12:26:53 +01:00
Shea Levy 608110804c Make all ExternalValueBase functions const 2014-12-02 10:27:10 -05:00
Shea Levy 320659b0cd Allow external code using libnixexpr to add types
Code that links to libnixexpr (e.g. plugins loaded with importNative, or
nix-exec) may want to provide custom value types and operations on
values of those types. For example, nix-exec is currently using sets
where a custom IO value type would be more appropriate. This commit
provides a generic hook for such types in the form of tExternal and the
ExternalBase virtual class, which contains all functions necessary for
libnixexpr's type-polymorphic functions (e.g. `showType`) to be
implemented.
2014-12-02 10:27:04 -05:00
Eelco Dolstra 976df480c9 Add a primop for regular expression pattern matching
The function ‘builtins.match’ takes a POSIX extended regular
expression and an arbitrary string. It returns ‘null’ if the string
does not match the regular expression. Otherwise, it returns a list
containing substring matches corresponding to parenthesis groups in
the regex. The regex must match the entire string (i.e. there is an
implied "^<pat>$" around the regex).  For example:

  match "foo" "foobar" => null
  match "foo" "foo" => []
  match "f(o+)(.*)" "foooobar" => ["oooo" "bar"]
  match "(.*/)?([^/]*)" "/dir/file.nix" => ["/dir/" "file.nix"]
  match "(.*/)?([^/]*)" "file.nix" => [null "file.nix"]

The following example finds all regular files with extension .nix or
.patch underneath the current directory:

  let

    findFiles = pat: dir: concatLists (mapAttrsToList (name: type:
      if type == "directory" then
        findFiles pat (dir + "/" + name)
      else if type == "regular" && match pat name != null then
        [(dir + "/" + name)]
      else []) (readDir dir));

  in findFiles ".*\\.(nix|patch)" (toString ./.)
2014-11-25 11:47:06 +01:00
Eelco Dolstra 4e340a983f forceString(): Accept pos argument 2014-11-25 10:23:36 +01:00
Shea Levy b0c5c2ac34 import derivation: cleanup
Before this there was a bug where a `find` was being called on a
not-yet-sorted set. The code was just a mess before anyway, so I cleaned
it up while fixing it.
2014-11-20 22:48:12 -05:00
Shea Levy 2719627bbe realiseContext: Handle all context types
Avoids an assertion
2014-11-15 21:43:51 -05:00
Shea Levy 997defa166 Add functors (callable attribute sets).
With this, attribute sets with a `__functor` attribute can be applied
just like normal functions. This can be used to attach arbitrary
metadata to a function without callers needing to treat it specially.
2014-11-15 16:12:05 -05:00
Eelco Dolstra 3a9b4a1467 Fix more warnings 2014-10-31 08:49:15 +01:00
Shea Levy 6062b12160 Fix build on gcc < 4.7 2014-10-20 12:15:50 -04:00
Eelco Dolstra ecc2c8f464 Improve printing of ASTs 2014-10-20 09:13:21 +02:00
Shea Levy 0ee1ca628a baseNameOf: Don't copy paths to the store first 2014-10-18 20:28:28 -04:00
Shea Levy d16e3c7f09 Export realiseContext in libnixexpr
Useful for importNative plugins
2014-10-17 22:15:09 -04:00