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(cherry picked from commit 893be6f5e36abb58bbaa9c49055a5218114dd514)
(cherry picked from commit bd79c1f6f6391786772a8a79962abe22f374cca4)
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This prevents spurious syscalls like
25011 lstat("/home/eelco/with import <nixpkgs> { }; (pkgs.runCommandCC or pkgs.runCommand) \"shell\" { buildInputs = [ (hello) ]; } \"\"", 0x7ffe9c67f580) = -1 ENOENT (No such file or directory)
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This reverts commit a0ef21262f4d5652bfb65cfacaec01d89c475a93. This
doesn't work in 'nix run' and nix-shell because setns() fails in
multithreaded programs, and Boehm GC mark threads are uncancellable.
Fixes #2646.
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This ensures that they can't write to /nix/store. Fixes #2535.
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These are all symlinks to 'nix' now, reducing the installed size by
about ~1.7 MiB.
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Tools which re-exec `$SHELL` or `$0` or `basename $SHELL` or even just
`bash` will otherwise get the non-interactive bash, providing a
broken shell for the same reasons described in
https://github.com/NixOS/nixpkgs/issues/27493.
Extends c94f3d5575d7af5403274d1e9e2f3c9d72989751
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Dead code since https://github.com/NixOS/nixpkgs/commit/6669a3b47711dc967df0ea8ff93fa9857aad015d
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Allows selectively adding environment variables to pure shells.
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Includes documentation and test.
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This particular `shell` variable wasn't used, since a new one was
declared in the only side of the `if` branch that used a `shell`
variable.
It could realistically confuse developers thinking it could use `$SHELL`
under some situations.
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EvalState contains a few counters (e.g. nrValues) that increase
quickly enough that they end up being interpreted as pointers by the
garbage collector. Moving it to the heap makes them invisible to the
garbage collector.
This reduces the max RSS doing 100 evaluations of
nixos.tests.firefox.x86_64-linux.drvPath from 455 MiB to 292 MiB.
Note: ideally, allocations would be much further up in the 64-bit
address space to reduce the odds of an integer being misinterpreted as
a pointer. Maybe we can use some linker magic to move the .bss segment
to a higher address.
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Fixes #2116.
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The ported code in 80ebc553eca19dafc64c47420cd49ddd506bc9b7 was incorrectly ported.
```
- $envCommand = "exec $execArgs $interpreter -e 'load(\"$script\")' -- ${\(join ' ', (map shellEscape, @savedArgs))}";
...
+ envCommand = (format("exec %1% %2% -e 'load(\"%3%\") -- %4%") % execArgs % interpreter % script % joined.str()).str();
```
The single-quote finishing the small ruby snippet was lost in
translation.
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This makes persistent shell environments easier to use.
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All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
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Instead, if a fixed-output derivation produces has an incorrect output
hash, we now unconditionally move the outputs to the path
corresponding with the actual hash and register it as valid. Thus,
after correcting the hash in the Nix expression (e.g. in a fetchurl
call), the fixed-output derivation doesn't have to be built again.
It would still be good to have a command for reporting the actual hash
of a fixed-output derivation (instead of throwing an error), but
"nix-build --hash" didn't do that.
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Note that nix-build always creates indirect roots.
Fixes #1830.
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In this mode, the following restrictions apply:
* The builtins currentTime, currentSystem and storePath throw an
error.
* $NIX_PATH and -I are ignored.
* fetchGit and fetchMercurial require a revision hash.
* fetchurl and fetchTarball require a sha256 attribute.
* No file system access is allowed outside of the paths returned by
fetch{Git,Mercurial,url,Tarball}. Thus 'nix build -f ./foo.nix' is
not allowed.
Thus, the evaluation result is completely reproducible from the
command line arguments. E.g.
nix build --pure-eval '(
let
nix = fetchGit { url = https://github.com/NixOS/nixpkgs.git; rev = "9c927de4b179a6dd210dd88d34bda8af4b575680"; };
nixpkgs = fetchGit { url = https://github.com/NixOS/nixpkgs.git; ref = "release-17.09"; rev = "66b4de79e3841530e6d9c6baf98702aa1f7124e4"; };
in (import (nix + "/release.nix") { inherit nix nixpkgs; }).build.x86_64-linux
)'
The goal is to enable completely reproducible and traceable
evaluation. For example, a NixOS configuration could be fully
described by a single Git commit hash. 'nixos-rebuild' would do
something like
nix build --pure-eval '(
(import (fetchGit { url = file:///my-nixos-config; rev = "..."; })).system
')
where the Git repository /my-nixos-config would use further fetchGit
calls or Git externals to fetch Nixpkgs and whatever other
dependencies it has. Either way, the commit hash would uniquely
identify the NixOS configuration and allow it to reproduced.
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Fixes #1663.
Also handle '!<output-name>' (#1694).
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Also, random cleanup to argument handling.
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Fixes #1563.
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Relevant RFC: NixOS/rfcs#4
$ ag -l | xargs sed -i -e "/\"/s/’/'/g;/\"/s/‘/'/g"
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Note that this removes the need for a derivation symlink, so the
--drv-path and --add-drv-link flags now do nothing.
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This adds about 0.1s to nix-shell runtime in the case where
bashInteractive already exists.
See discussion at https://github.com/NixOS/nixpkgs/issues/27493.
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Fixes #824.
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Also, make nix-shell respect --option. (Previously it only passed it
along to nix-instantiate and nix-build.)
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It lacked a backslash. Use a raw string and single quotes around PS1
to simplify this.
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If running nix-shell as root, the terminator should be # and not $.
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This restores pre-17.03 behaviour by making gcc available.
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Need to remember that std::map::insert() and emplace() don't overwrite
existing entries...
This fixes a regression relative to 1.11 that in particular triggers
in nested nix-shells.
Before:
$ nativeBuildInputs=/foo nix-shell -p hello --run 'hello'
build input /foo does not exist
After:
$ nativeBuildInputs=/foo nix-shell -p hello --run 'hello'
Hello, world!
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In particular, this fixes Ctrl-C in nix-shell sessions.
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Regression from a5f2750e ("Fix early removal of rc-file for nix-shell").
The removal of BASH_ENV causes nothing to be executed by bash if it
detects itself in a non-interactive context. Instead, just
use the same condition used by bash to launch bash differently.
According to bash sources, the condition (stdin and stder both
must be TTYs) is specified by POSIX so this should be pretty
safe to rely on.
Fixes #1171 on master, needs a backport to the Perl code in 1.11.
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"i < argc - 1" should be "i < argc".
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I had observed that 'bash --rcfile' would do nothing in a
non-interactive context and cause nothing to be executed if a script
using nix-shell shebangs were run in a non-interactive context.
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The 'args' variable here is shadowing one in the outer scope and its
contents end up unused. This causes any '#! nix-shell' lines to
effectively be ignored. The intention here was to clear the args vector,
as far as I can tell (and it seems to work).
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This reverts commit f78126bfd6b6c8477fcdbc09b2f98772dbe9a1e7. There
really is no need for such a massive change...
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