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5cd72598fe
Impure derivations are derivations that can produce a different result
every time they're built. Example:
stdenv.mkDerivation {
name = "impure";
__impure = true; # marks this derivation as impure
outputHashAlgo = "sha256";
outputHashMode = "recursive";
buildCommand = "date > $out";
};
Some important characteristics:
* This requires the 'impure-derivations' experimental feature.
* Impure derivations are not "cached". Thus, running "nix-build" on
the example above multiple times will cause a rebuild every time.
* They are implemented similar to CA derivations, i.e. the output is
moved to a content-addressed path in the store. The difference is
that we don't register a realisation in the Nix database.
* Pure derivations are not allowed to depend on impure derivations. In
the future fixed-output derivations will be allowed to depend on
impure derivations, thus forming an "impurity barrier" in the
dependency graph.
* When sandboxing is enabled, impure derivations can access the
network in the same way as fixed-output derivations. In relaxed
sandboxing mode, they can access the local filesystem.
113 lines
2.3 KiB
Makefile
113 lines
2.3 KiB
Makefile
nix_tests = \
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flakes.sh \
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ca/gc.sh \
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gc.sh \
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remote-store.sh \
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lang.sh \
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fetchMercurial.sh \
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gc-auto.sh \
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user-envs.sh \
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binary-cache.sh \
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multiple-outputs.sh \
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ca/build.sh \
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nix-build.sh \
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gc-concurrent.sh \
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repair.sh \
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fixed.sh \
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export-graph.sh \
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timeout.sh \
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fetchGitRefs.sh \
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gc-runtime.sh \
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tarball.sh \
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fetchGit.sh \
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fetchurl.sh \
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fetchPath.sh \
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simple.sh \
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referrers.sh \
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optimise-store.sh \
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substitute-with-invalid-ca.sh \
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ca/concurrent-builds.sh \
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signing.sh \
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ca/build-with-garbage-path.sh \
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hash.sh \
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gc-non-blocking.sh \
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check.sh \
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ca/substitute.sh \
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nix-shell.sh \
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ca/signatures.sh \
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ca/nix-shell.sh \
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ca/nix-copy.sh \
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check-refs.sh \
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build-remote-input-addressed.sh \
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secure-drv-outputs.sh \
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restricted.sh \
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fetchGitSubmodules.sh \
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flake-searching.sh \
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ca/duplicate-realisation-in-closure.sh \
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readfile-context.sh \
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nix-channel.sh \
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recursive.sh \
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dependencies.sh \
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check-reqs.sh \
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build-remote-content-addressed-fixed.sh \
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build-remote-content-addressed-floating.sh \
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nar-access.sh \
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pure-eval.sh \
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eval.sh \
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ca/post-hook.sh \
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repl.sh \
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ca/repl.sh \
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ca/recursive.sh \
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binary-cache-build-remote.sh \
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search.sh \
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logging.sh \
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export.sh \
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config.sh \
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add.sh \
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local-store.sh \
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filter-source.sh \
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misc.sh \
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dump-db.sh \
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linux-sandbox.sh \
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build-dry.sh \
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structured-attrs.sh \
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shell.sh \
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brotli.sh \
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zstd.sh \
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compression-levels.sh \
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nix-copy-ssh.sh \
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post-hook.sh \
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function-trace.sh \
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flake-local-settings.sh \
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eval-store.sh \
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why-depends.sh \
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import-derivation.sh \
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ca/import-derivation.sh \
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nix_path.sh \
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case-hack.sh \
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placeholders.sh \
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ssh-relay.sh \
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plugins.sh \
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build.sh \
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ca/nix-run.sh \
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db-migration.sh \
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bash-profile.sh \
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pass-as-file.sh \
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describe-stores.sh \
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nix-profile.sh \
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suggestions.sh \
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store-ping.sh \
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fetchClosure.sh \
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impure-derivations.sh
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ifeq ($(HAVE_LIBCPUID), 1)
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nix_tests += compute-levels.sh
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endif
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install-tests += $(foreach x, $(nix_tests), tests/$(x))
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tests-environment = NIX_REMOTE= $(bash) -e
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clean-files += $(d)/common.sh $(d)/config.nix $(d)/ca/config.nix
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test-deps += tests/common.sh tests/config.nix tests/ca/config.nix tests/plugins/libplugintest.$(SO_EXT)
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