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path: root/src/nix/why-depends.cc
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2022-11-23add explanation and testTaeer Bar-Yam
2022-11-23Fix why-depends for CA derivationsTaeer Bar-Yam
why-depends assumed that we knew the output path of the second argument. For CA derivations, we might not know until it's built. One way to solve this would be to build the second installable to get the output path. In this case we don't need to, though. If the first installable (A) depends on the second (B), then getting the store path of A will necessitate having the store path B. The contrapositive is, if the store path of B is not known (i.e. it's a CA derivation which hasn't been built), then A does not depend on B.
2022-03-02Move installables-related operationsEelco Dolstra
2022-02-28Merge pull request #6072 from Ma27/fix-nix-why-depends-non-preciseThéophane Hufschmitt
nix/why-depends: fix output when not using `--precise`
2022-02-25Remove std::string alias (for real this time)Eelco Dolstra
Also use std::string_view in a few more places.
2022-02-10nix/why-depends: fix output when not using `--precise`Maximilian Bosch
On Nix 2.6 the output of `nix why-depends --all` seems to be somewhat off: $ nix why-depends /nix/store/kn47hayxab8gc01jhr98dwyywbx561aq-nixos-system-roflmayr-21.11.20220207.6c202a9.drv /nix/store/srn5jbs1q30jpybdmxqrwskyny659qgc-nix-2.6.drv --derivation --extra-experimental-features nix-command --all /nix/store/kn47hayxab8gc01jhr98dwyywbx561aq-nixos-system-roflmayr-21.11.20220207.6c202a9.drv └───/nix/store/g8bpgfjhh5vxrdq0w6r6s64f9kkm9z6c-etc.drv │ └───/nix/store/hm0jmhp8shbf3cl846a685nv4f5cp3fy-nspawn-inst.drv | [...] └───/nix/store/2d6q3ygiim9ijl5d4h0qqx6vnjgxywyr-system-units.drv └───/nix/store/dil014y1b8qyjhhhf5fpaah5fzdf0bzs-unit-systemd-nspawn-hydra.service.drv └───/nix/store/a9r72wwx8qrxyp7hjydyg0gsrwnn26zb-activate.drv └───/nix/store/99hlc7i4gl77wq087lbhag4hkf3kvssj-nixos-system-hydra-21.11pre-git.drv Please note that `[...]-system-units.drv` is supposed to be a direct child of `[...]-etc.drv`. The reason for that is that each new level printed by `printNode` is four spaces off in comparison to `nix why-depends --precise` because the recursive `printNode()` only prints the path and not the `tree*`-chars in the case of `--precise` and in this format the path is four spaces further indented, i.e. on a newline, but on the same level as the path's children, i.e. /nix/store/kn47hayxab8gc01jhr98dwyywbx561aq-nixos-system-roflmayr-21.11.20220207.6c202a9.drv └───/: …1-p8.drv",["out"]),("/nix/store/g8bpgfjhh5vxrdq0w6r6s64f9kkm9z6c-etc.drv",["out"]),("/nix/store/… → /nix/store/g8bpgfjhh5vxrdq0w6r6s64f9kkm9z6c-etc.drv As you can see `[...]-etc.drv` is a direct child of the root, but four spaces indented. This logic was directly applied to the code-path with `precise=false` which resulted in `tree*` being printed four spaces too deep. In case of no `--precise`, `hits[hash]` is empty and the path itself should be printed rather than hits using the same logic as for `hits[hash]`. With this fix, the output looks correct now: /nix/store/kn47hayxab8gc01jhr98dwyywbx561aq-nixos-system-roflmayr-21.11.20220207.6c202a9.drv └───/nix/store/g8bpgfjhh5vxrdq0w6r6s64f9kkm9z6c-etc.drv ├───/nix/store/hm0jmhp8shbf3cl846a685nv4f5cp3fy-nspawn-inst.drv | [...] └───/nix/store/2d6q3ygiim9ijl5d4h0qqx6vnjgxywyr-system-units.drv └───/nix/store/dil014y1b8qyjhhhf5fpaah5fzdf0bzs-unit-systemd-nspawn-hydra.service.drv └───/nix/store/a9r72wwx8qrxyp7hjydyg0gsrwnn26zb-activate.drv └───/nix/store/99hlc7i4gl77wq087lbhag4hkf3kvssj-nixos-system-hydra-21.11pre-git.drv
2022-01-21Improve the description of the `--precise` optionThéophane Hufschmitt
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2022-01-19Make `nix why-depends` quieter by defaultregnat
Unless `--precise` is passed, make `nix why-depends` only show the dependencies between the store paths, without introspecting them to find the actual references. This also makes it ~3x faster
2022-01-14Start the pager early-enough in `nix why-depends`regnat
`nix why-depends` is piping its output into a pager by default. However the pager was only started after the first path is printed, causing it to be excluded from the pager output. (Actually the pager was started *inside* the recursive function that was printing the dependency chain, so a new instance was started at each level. It’s a little miracle that it worked at all). Fix #5911
2021-12-20Add shell completion for why-dependsNaïm Favier
Fixes #5806
2021-07-22Use eval-store in more placesEelco Dolstra
In particular, this now works: $ nix path-info --eval-store auto --store https://cache.nixos.org nixpkgs#hello Previously this would fail as it would try to upload the hello .drv to cache.nixos.org. Now the .drv is instantiated in the local store, and then we check for the existence of the outputs in cache.nixos.org.
2021-01-13Convert option descriptions to MarkdownEelco Dolstra
2020-12-21Add 'nix why-depends' manpageEelco Dolstra
2020-10-09Merge remote-tracking branch 'upstream/master' into fix-and-ci-static-buildsJohn Ericson
2020-10-06Remove static variable name clashesEelco Dolstra
This was useful for an experiment with building Nix as a single compilation unit. It's not very useful otherwise but also doesn't hurt...
2020-09-25stdout_ -> coutJohn Ericson
Better to get creative than just sprinkle arbitrary underscores.
2020-07-30Merge remote-tracking branch 'origin/master' into fix-and-ci-static-buildsMatthew Bauer
2020-07-16Merge remote-tracking branch 'origin/flakes'Eelco Dolstra
2020-07-15nix why-depends: Fix shortest path calculationEelco Dolstra
This was completely broken since d8972317fc4314864619cadd5620ae780da657a3.
2020-07-15nix: Fix examplesEelco Dolstra
2020-07-15nix: Add --derivation flag to operate on .drv pathsEelco Dolstra
For instance, 'nix why-depends --use-derivation nixpkgs#hello nixpkgs#glibc' shows why hello's .drv depends on glibc's .drv.
2020-07-15nix why-depends: Fix misleading messageEelco Dolstra
2020-07-15Clean up RealiseModeEelco Dolstra
2020-06-29Rename logging->stdout to logging->stdout_Matthew Bauer
musl doesn't like this identifier
2020-06-17Merge remote-tracking branch 'origin/master' into flakesEelco Dolstra
2020-06-16Remove StorePath::clone() and related functionsEelco Dolstra
2020-06-16StorePath: Rewrite in C++Eelco Dolstra
On nix-env -qa -f '<nixpkgs>', this reduces maximum RSS by 20970 KiB and runtime by 0.8%. This is mostly because we're not parsing the hash part as a hash anymore (just validating that it consists of base-32 characters). Also, replace storePathToHash() by StorePath::hashPart().
2020-05-05Merge remote-tracking branch 'origin/master' into flakesEelco Dolstra
2020-05-05nix --help: Group commandsEelco Dolstra
2020-05-04Flag: Use designated initializersEelco Dolstra
2020-04-16Use Logger::stdout()Eelco Dolstra
(cherry picked from commit 8f41847394524fcac40d3b5620139ca7e94a18e3)
2020-04-16Use Logger::stdout()Eelco Dolstra
2020-03-24Pretty-print 'nix why-depends' / 'nix-store -q --tree' outputEelco Dolstra
Extracted from 678301072f05b650dc15c5edb4c25f08f0d6cace.
2020-02-14Merge remote-tracking branch 'origin/master' into flakesEelco Dolstra
2020-02-13Prevent uninitialized StorePath creationEelco Dolstra
2020-01-31Use light box drawing symbolsEelco Dolstra
2020-01-31nix flake list-inputs: Pretty-print the treeEelco Dolstra
2019-12-11Merge remote-tracking branch 'origin/master' into flakesEelco Dolstra
2019-12-10Make the Store API more type-safeEelco Dolstra
Most functions now take a StorePath argument rather than a Path (which is just an alias for std::string). The StorePath constructor ensures that the path is syntactically correct (i.e. it looks like <store-dir>/<base32-hash>-<name>). Similarly, functions like buildPaths() now take a StorePathWithOutputs, rather than abusing Path by adding a '!<outputs>' suffix. Note that the StorePath type is implemented in Rust. This involves some hackery to allow Rust values to be used directly in C++, via a helper type whose destructor calls the Rust type's drop() function. The main issue is the dynamic nature of C++ move semantics: after we have moved a Rust value, we should not call the drop function on the original value. So when we move a value, we set the original value to bitwise zero, and the destructor only calls drop() if the value is not bitwise zero. This should be sufficient for most types. Also lots of minor cleanups to the C++ API to make it more modern (e.g. using std::optional and std::string_view in some places).
2019-12-05Make subcommand construction in MultiCommand lazyEelco Dolstra
(cherry picked from commit a0de58f471c9087d8e6cc60a6078f9940a125b15)
2019-06-18Make subcommand construction in MultiCommand lazyEelco Dolstra
2019-04-08nix: Make -f work for compatibilityEelco Dolstra
2018-07-03nix why-depends: render output into $PAGERMaximilian Bosch
2017-09-25nix why-depends: Write to stdoutEelco Dolstra
2017-09-14Add "nix add-to-store" commandEelco Dolstra
2017-09-14nix why-depends: Fix showing self-referencesEelco Dolstra
2017-09-11nix why-depends: Add option to show all edges causing a dependencyEelco Dolstra
For example, without --all: $ nix why-depends nixpkgs.nixUnstable nixpkgs.libssh2 /nix/store/s9n5gvj2l49b4n19nz6xl832654nf7n7-nix-1.12pre5511_c94f3d55 └───lib/libnixstore.so: …/lib:/nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0/lib… => /nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0 └───lib/libcurl.la: …ib -L/nix/store/4mbayl1y5hpjbjzkx8ndyhkv98kqw1wi-libssh2-1.8.0/l… => /nix/store/4mbayl1y5hpjbjzkx8ndyhkv98kqw1wi-libssh2-1.8.0 but with --all: $ nix why-depends -a nixpkgs.nixUnstable nixpkgs.libssh2 /nix/store/s9n5gvj2l49b4n19nz6xl832654nf7n7-nix-1.12pre5511_c94f3d55 ├───lib/libnixstore.so: …/lib:/nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0/lib… │ => /nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0 │ └───lib/libcurl.la: …ib -L/nix/store/4mbayl1y5hpjbjzkx8ndyhkv98kqw1wi-libssh2-1.8.0/l… │ lib/libcurl.so.4.4.0: …/lib:/nix/store/4mbayl1y5hpjbjzkx8ndyhkv98kqw1wi-libssh2-1.8.0/l… │ => /nix/store/4mbayl1y5hpjbjzkx8ndyhkv98kqw1wi-libssh2-1.8.0 └───lib/libnixstore.so: …/lib:/nix/store/bx2i9vi76lps6w9rr73fxf6my31s4dg5-aws-sdk-cpp-1.0… => /nix/store/bx2i9vi76lps6w9rr73fxf6my31s4dg5-aws-sdk-cpp-1.0.153 └───lib/libaws-cpp-sdk-core.so: …e.so./nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0/lib… lib/libaws-cpp-sdk-s3.so: …/lib:/nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0/lib… => /nix/store/w9ykqpl5v0r3vfwsgn408jqhs72cx96x-curl-7.55.0
2017-09-10Add command "nix why-depends"Eelco Dolstra
This command shows why a package has another package in its runtime closure. For example, to see why VLC has libdrm.dev in its closure: $ nix why-depends nixpkgs.vlc nixpkgs.libdrm.dev /nix/store/g901z9pcj0n5yy5n6ykxk3qm4ina1d6z-vlc-2.2.5.1: lib/libvlccore.so.8.0.0: …nfig:/nix/store/405lmx6jl8lp0ad1vrr6j498chrqhz8g-libdrm-2.4.75-d… /nix/store/s3nm7kd8hlcg0facn2q1ff2n7wrwdi2l-mesa-noglu-17.0.7-dev: nix-support/propagated-native-build-inputs: …-dev /nix/store/405lmx6jl8lp0ad1vrr6j498chrqhz8g-libdrm-2.4.75-d… Thus, VLC's lib/libvlccore.so.8.0.0 as well as mesa-noglu's nix-support/propagated-native-build-inputs cause the dependency.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 02:32:21 +0000