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2019-10-21Mark content-addressable paths with references as experimentalEelco Dolstra
2019-10-21Allow content-addressable paths to have referencesEelco Dolstra
This adds a command 'nix make-content-addressable' that rewrites the specified store paths into content-addressable paths. The advantage of such paths is that 1) they can be imported without signatures; 2) they can enable deduplication in cases where derivation changes do not cause output changes (apart from store path hashes). For example, $ nix make-content-addressable -r nixpkgs.cowsay rewrote '/nix/store/g1g31ah55xdia1jdqabv1imf6mcw0nb1-glibc-2.25-49' to '/nix/store/48jfj7bg78a8n4f2nhg269rgw1936vj4-glibc-2.25-49' ... rewrote '/nix/store/qbi6rzpk0bxjw8lw6azn2mc7ynnn455q-cowsay-3.03+dfsg1-16' to '/nix/store/iq6g2x4q62xp7y7493bibx0qn5w7xz67-cowsay-3.03+dfsg1-16' We can then copy the resulting closure to another store without signatures: $ nix copy --trusted-public-keys '' ---to ~/my-nix /nix/store/iq6g2x4q62xp7y7493bibx0qn5w7xz67-cowsay-3.03+dfsg1-16 In order to support self-references in content-addressable paths, these paths are hashed "modulo" self-references, meaning that self-references are zeroed out during hashing. Somewhat annoyingly, this means that the NAR hash stored in the Nix database is no longer necessarily equal to the output of "nix hash-path"; for content-addressable paths, you need to pass the --modulo flag: $ nix path-info --json /nix/store/iq6g2x4q62xp7y7493bibx0qn5w7xz67-cowsay-3.03+dfsg1-16 | jq -r .[].narHash sha256:0ri611gdilz2c9rsibqhsipbfs9vwcqvs811a52i2bnkhv7w9mgw $ nix hash-path --type sha256 --base32 /nix/store/iq6g2x4q62xp7y7493bibx0qn5w7xz67-cowsay-3.03+dfsg1-16 1ggznh07khq0hz6id09pqws3a8q9pn03ya3c03nwck1kwq8rclzs $ nix hash-path --type sha256 --base32 /nix/store/iq6g2x4q62xp7y7493bibx0qn5w7xz67-cowsay-3.03+dfsg1-16 --modulo iq6g2x4q62xp7y7493bibx0qn5w7xz67 0ri611gdilz2c9rsibqhsipbfs9vwcqvs811a52i2bnkhv7w9mgw
2019-10-21Add experimental-features settingEelco Dolstra
Experimental features are now opt-in. There is currently one experimental feature: "nix-command" (which enables the "nix" command. This will allow us to merge experimental features more quickly, without committing to supporting them indefinitely. Typical usage: $ nix build --experimental-features 'nix-command flakes' nixpkgs#hello (cherry picked from commit 8e478c234100cf03ea1b777d4bd42a9be7be9e8c, without the "flakes" feature)
2019-10-11ssh-ng: Don't set CPU affinity on the remoteEelco Dolstra
Fixes #3138.
2019-10-10DohEelco Dolstra
https://hydra.nixos.org/build/102803044
2019-10-09Force per-user group to a known valueEelco Dolstra
2019-10-09Go back to 755 permission on per-user directoriesEelco Dolstra
700 is pointless since the store is world-readable anyway. And per-user/root/channels must be world-readable.
2019-10-09nix-env: Create ~/.nix-profile automaticallyEelco Dolstra
2019-10-09Remove world-writability from per-user directoriesEelco Dolstra
'nix-daemon' now creates subdirectories for users when they first connect. Fixes #509 (CVE-2019-17365). Should also fix #3127.
2019-10-09OCD performance fix: {find,count}+insert => insertEelco Dolstra
2019-10-08Handle empty sandbox_shellMatthew Bauer
Previously, SANDBOX_SHELL was set to empty when unavailable. This caused issues when actually generating the sandbox. Instead, just set SANDBOX_SHELL when --with-sandbox-shell= is non-empty. Alternative implementation to https://github.com/NixOS/nix/pull/3038.
2019-10-04Revert "std::uncaught_exception() -> std::uncaught_exceptions()"Eelco Dolstra
This reverts commit 6b83174ffffbdfc3f876d94d5178e0b83f675cae because it doesn't work on macOS yet. https://hydra.nixos.org/build/102617587
2019-09-30Merge pull request #2338 from bobvanderlinden/pr-cannot-delete-alive-whyDomen Kožar
mention `nix-store --query --roots` when a path cannot be deleted
2019-09-23Merge pull request #3103 from bhipple/fix/spellingEelco Dolstra
Fix spelling in comment
2019-09-23Merge pull request #3104 from zimbatm/no-show-trace-forwardingEelco Dolstra
libstore: don't forward --show-trace
2019-09-22Shut up some warningsEelco Dolstra
(cherry picked from commit 99e8e58f2de9941353b47ed14fbe4ed76d635519)
2019-09-22Don't catch exceptions by valueEelco Dolstra
(cherry picked from commit 893be6f5e36abb58bbaa9c49055a5218114dd514)
2019-09-22libstore: don't forward --show-tracezimbatm
2019-09-21Fix spelling in commentBenjamin Hipple
2019-09-13std::uncaught_exception() -> std::uncaught_exceptions()Eelco Dolstra
The former is deprecated in C++17. Fixes a clang warning.
2019-09-04BinaryCacheStore: Add index-debug-info optionEelco Dolstra
This integrates the functionality of the index-debuginfo program in nixos-channel-scripts to maintain an index of DWARF debuginfo files in a format usable by dwarffs. Thus the debug info index is updated by Hydra rather than by the channel mirroring script. Example usage: $ nix copy --to 'file:///tmp/binary-cache?index-debug-info=true' /nix/store/vr9mhcch3fljzzkjld3kvkggvpq38cva-nix-2.2.2-debug $ cat /tmp/binary-cache/debuginfo/036b210b03bad75ab2d8fc80b7a146f98e7f1ecf.debug {"archive":"../nar/0313h2kdhk4v73xna9ysiksp2v8xrsk5xsw79mmwr3rg7byb4ka8.nar.xz","member":"lib/debug/.build-id/03/6b210b03bad75ab2d8fc80b7a146f98e7f1ecf.debug"} Fixes #3083.
2019-09-03Support allowSubstitutes attribute in structured attribute derivationsEelco Dolstra
Hopefully fixes #3081 (didn't test).
2019-09-03Add some noexceptsEelco Dolstra
This is to assert that callback functions should never throw (since the context in which they're called may not be able to handle the exception).
2019-09-03Ensure that Callback is called only onceEelco Dolstra
Also, make Callback movable but uncopyable.
2019-09-03Downloader: Remove a possible double call to CallbackEelco Dolstra
2019-08-29Merge pull request #3069 from matthewbauer/max-nameEelco Dolstra
Set maximum name length in Nix
2019-08-29Don't rely on st_blocksEelco Dolstra
It doesn't seem very reliable on ZFS.
2019-08-29CleanupEelco Dolstra
2019-08-28Set maximum name length in NixMatthew Bauer
Previously we allowed any length of name for Nix derivations. This is bad because different file systems have different max lengths. To make things predictable, I have picked a max. This was done by trying to build this derivation: derivation { name = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"; builder = "/no-such-path"; system = "x86_64-linux"; } Take off one a and it will not lead to file name too long. That ends up being 212 a’s. An even smaller max could be picked if we want to support more file systems. Working backwards, this is why: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-${name}.drv.chroot > 255 - 32 - 1 - 4 - 7 = 211
2019-08-28Don't send certain setting overrides to the daemonEelco Dolstra
These are already handled separately. This fixes warnings like warning: ignoring the user-specified setting 'max-jobs', because it is a restricted setting and you are not a trusted user when using the -j flag.
2019-08-27Merge branch 'test-sandboxing' of https://github.com/matthewbauer/nixEelco Dolstra
2019-08-23Reset tmpDirInSandbox for unsandboxedMatthew Bauer
2019-08-08Merge pull request #3031 from grahamc/low-speed-limitEelco Dolstra
conf: stalled-download-timeout: make tunable
2019-08-08conf: stalled-download-timeout: make tunableGraham Christensen
Make curl's low speed limit configurable via stalled-download-timeout. Before, this limit was five minutes without receiving a single byte. This is much too long as if the remote end may not have even acknowledged the HTTP request.
2019-08-07Merge pull request #3030 from dtzWill/fix/missing-include-ocloexecEelco Dolstra
pathlocks: add include to fcntl.h for O_CLOEXEC
2019-08-07Merge pull request #2995 from tweag/post-build-hookEelco Dolstra
Add a post build hook
2019-08-07pathlocks: add include to fcntl.h for O_CLOEXECWill Dietz
2019-08-02nix-store --verify: Don't repair while holding the GC lockEelco Dolstra
2019-08-02SimplifyEelco Dolstra
With BSD locks we don't have to guard against reading our own temproots.
2019-08-02Use BSD instead of POSIX file locksEelco Dolstra
POSIX file locks are essentially incompatible with multithreading. BSD locks have much saner semantics. We need this now that there can be multiple concurrent LocalStore::buildPaths() invocations.
2019-08-02Add a test for auto-GCEelco Dolstra
This currently fails because we're using POSIX file locks. So when the garbage collector opens and closes its own temproots file, it causes the lock to be released and then deleted by another GC instance.
2019-08-02Add a post-build-hookregnat
Passing `--post-build-hook /foo/bar` to a nix-* command will cause `/foo/bar` to be executed after each build with the following environment variables set: DRV_PATH=/nix/store/drv-that-has-been-built.drv OUT_PATHS=/nix/store/...build /nix/store/...build-bin /nix/store/...build-dev This can be useful in particular to upload all the builded artifacts to the cache (including the ones that don't appear in the runtime closure of the final derivation or are built because of IFD). This new feature prints the stderr/stdout output to the `nix-build` and `nix build` client, and the output is printed in a Nix 2 compatible format: [nix]$ ./inst/bin/nix-build ./test.nix these derivations will be built: /nix/store/ishzj9ni17xq4hgrjvlyjkfvm00b0ch9-my-example-derivation.drv building '/nix/store/ishzj9ni17xq4hgrjvlyjkfvm00b0ch9-my-example-derivation.drv'... hello! bye! running post-build-hook '/home/grahamc/projects/github.com/NixOS/nix/post-hook.sh'... post-build-hook: + sleep 1 post-build-hook: + echo 'Signing paths' /nix/store/qr213vjmibrqwnyp5fw678y7whbkqyny-my-example-derivation post-build-hook: Signing paths /nix/store/qr213vjmibrqwnyp5fw678y7whbkqyny-my-example-derivation post-build-hook: + sleep 1 post-build-hook: + echo 'Uploading paths' /nix/store/qr213vjmibrqwnyp5fw678y7whbkqyny-my-example-derivation post-build-hook: Uploading paths /nix/store/qr213vjmibrqwnyp5fw678y7whbkqyny-my-example-derivation post-build-hook: + sleep 1 post-build-hook: + printf 'very important stuff' /nix/store/qr213vjmibrqwnyp5fw678y7whbkqyny-my-example-derivation [nix-shell:~/projects/github.com/NixOS/nix]$ ./inst/bin/nix build -L -f ./test.nix my-example-derivation> hello! my-example-derivation> bye! my-example-derivation (post)> + sleep 1 my-example-derivation (post)> + echo 'Signing paths' /nix/store/c263gzj2kb2609mz8wrbmh53l14wzmfs-my-example-derivation my-example-derivation (post)> Signing paths /nix/store/c263gzj2kb2609mz8wrbmh53l14wzmfs-my-example-derivation my-example-derivation (post)> + sleep 1 my-example-derivation (post)> + echo 'Uploading paths' /nix/store/c263gzj2kb2609mz8wrbmh53l14wzmfs-my-example-derivation my-example-derivation (post)> Uploading paths /nix/store/c263gzj2kb2609mz8wrbmh53l14wzmfs-my-example-derivation my-example-derivation (post)> + sleep 1 my-example-derivation (post)> + printf 'very important stuff' [1 built, 0.0 MiB DL] Co-authored-by: Graham Christensen <graham@grahamc.com> Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2019-07-30Don’t rely on EPERMMatthew Bauer
startProcess does not appear to send the exit code to the helper correctly. Not sure why this is, but it is probably safe to just fallback on all sandbox errors.
2019-07-30Disable findRuntimeRoots on darwin when running tests because lsof is slowBas van Dijk
See: https://github.com/NixOS/nix/issues/3011
2019-07-25Use sandbox fallback when cloning fails in builderMatthew Bauer
When sandbox-fallback = true (the default), the Nix builder will fall back to disabled sandbox mode when the kernel doesn’t allow users to set it up. This prevents hard errors from occuring in tricky places, especially the initial installer. To restore the previous behavior, users can set: sandbox-fallback = false in their /etc/nix/nix.conf configuration.
2019-07-25Disable CLONE_NEWUSER when it’s unavailableMatthew Bauer
Some kernels disable "unpriveleged user namespaces". This is unfortunate, but we can still use mount namespaces. Anyway, since each builder has its own nixbld user, we already have most of the benefits of user namespaces.
2019-07-13Merge pull request #2975 from matthewbauer/fix-nsswitch-issueEelco Dolstra
Don’t use entire /etc/nsswitch.conf file
2019-07-10Resume NAR downloadsEelco Dolstra
This is a much simpler fix to the 'error 9 while decompressing xz file' problem than 78fa47a7f08a4cb6ee7061bf0bd86a40e1d6dc91. We just do a ranged HTTP request starting after the data that we previously wrote into the sink. Fixes #2952, #379.
2019-07-10HttpBinaryCacheStore: Use default number of retries for NARsEelco Dolstra
2019-07-10Downloader: Use warn()Eelco Dolstra
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