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We were calculating the nar hash wrong when the file ingestion method
was flat. I don't think there's anything we can do in that case but dump
the file again, so that's what I do.
As an optomization, we again could reuse the original dump for just the
recursive and non-sha256 case, but I rather do that after this fix, and
after my other PRs which deduplicate this code.
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This is only used by hydra-queue-runner and it's better to implement
it there.
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Fix ANSI color constants
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The `m` acts as termination-symbol when declaring graphics. Because
of this, the `;1m` doesn't have any effect and is directly printed to
the console:
```
$ nix repl
> builtins.fetchGit { /* ... */ }
{ outPath = "/nix/store/s0f0iz4a41cxx2h055lmh6p2d5k5bc6r-source"; rev = "e73e45b723a9a6eecb98bd5f3df395d9ab3633b6"; revCount = ;1m428; shortRev = "e73e45b"; submodules = ;1mfalse; }
```
Introduced by 6403508f5a2fcf073b2a0d4e5fcf5f5ebb890384.
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Fixes #3684.
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This helps nix-prefetch-url when using a local store.
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add temp CI job to test syspolicy impact
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Starting in Catalina, macOS runs a syspolicyd "assessment" that hits the network for each binary/script executable. It does cache these results, but Nix tends to introduce many "new" executables per build. (You can read more about this at https://github.com/NixOS/nix/issues/3789).
This PR adds a temporary, redundant macOS job with these assessments disabled. I'm hoping you can adopt it for a few weeks to help me collect more data on how this affects real projects.
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This reduces memory consumption of
nix-instantiate \
-E 'with import <nixpkgs> {}; runCommand "foo" { src = ./blender; } "echo foo"' \
--option nar-buffer-size 10000
(where ./blender is a 1.1 GiB tree) from 1716 to 36 MiB, while still
ensuring that we don't do any write I/O for small source paths (up to
'nar-buffer-size' bytes). The downside is that large paths are now
always written to a temporary location in the store, even if they
produce an already valid store path. Thus, adding large paths might be
slower and run out of disk space. ¯\_(ツ)_/¯ Of course, you can always
restore the old behaviour by setting 'nar-buffer-size' to a very high
value.
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Example:
$ nix-build -E 'with import <nixpkgs> {}; runCommand "foo" { x = runCommand "bar" {} "exit 1"; } "echo foo; exit 1"'
warning: unknown setting 'auto-allocate-uids'
these 2 derivations will be built:
/nix/store/v4fbdbhcdi949929a67g8farwf72zgam-bar.drv
/nix/store/k4fsvrjl7cp2xpz7927iv7g0dqj1zyhs-foo.drv
warning: unknown setting 'auto-allocate-uids'
building '/nix/store/v4fbdbhcdi949929a67g8farwf72zgam-bar.drv'...
error: --- Error ----------------------------------------------------------------------------------------------------------------------------------------------------------------- nix-daemon
builder for '/nix/store/v4fbdbhcdi949929a67g8farwf72zgam-bar.drv' failed with exit code 1
error: --- Error ------------------------------------------------------------------------------------------------------------------------------------------------------------------ nix-build
got unknown message type 1 from Nix daemon
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Fixes #3471.
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address failing addTrace test
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This was accepted by libstdc++ but not libc++.
https://hydra.nixos.org/build/123569154
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Parallel tests fixes
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Fix a socket length failure on the OSX builders
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Reuse the pre-existing list rather than the one written as part of #3777
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This reduces the amount of disk space needed to run the tests from
half a gigabyte to 10 megabytes.
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