forked from lix-project/lix
Merge pull request #6270 from Artturin/stdineval
nix: allow using --file - to read from stdin
This commit is contained in:
commit
7117053457
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@ -1 +1,3 @@
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# Release X.Y (202?-??-??)
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* Various nix commands can now read expressions from stdin with `--file -`.
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@ -134,7 +134,9 @@ SourceExprCommand::SourceExprCommand()
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addFlag({
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.longName = "file",
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.shortName = 'f',
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.description = "Interpret installables as attribute paths relative to the Nix expression stored in *file*.",
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.description =
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"Interpret installables as attribute paths relative to the Nix expression stored in *file*. "
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"If *file* is the character -, then a Nix expression will be read from standard input.",
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.category = installablesCategory,
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.labels = {"file"},
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.handler = {&file},
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@ -695,7 +697,10 @@ std::vector<std::shared_ptr<Installable>> SourceExprCommand::parseInstallables(
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auto state = getEvalState();
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auto vFile = state->allocValue();
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if (file)
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if (file == "-") {
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auto e = state->parseStdin();
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state->eval(e, *vFile);
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} else if (file)
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state->evalFile(lookupFileArg(*state, *file), *vFile);
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else {
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auto e = state->parseExprFromString(*expr, absPath("."));
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5
tests/eval.nix
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5
tests/eval.nix
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{
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int = 123;
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str = "foo";
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attr.foo = "bar";
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}
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29
tests/eval.sh
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29
tests/eval.sh
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source common.sh
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clearStore
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testStdinHeredoc=$(nix eval -f - <<EOF
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{
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bar = 3 + 1;
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foo = 2 + 2;
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}
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EOF
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)
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[[ $testStdinHeredoc == '{ bar = 4; foo = 4; }' ]]
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nix eval --expr 'assert 1 + 2 == 3; true'
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[[ $(nix eval int -f "./eval.nix") == 123 ]]
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[[ $(nix eval str -f "./eval.nix") == '"foo"' ]]
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[[ $(nix eval str --raw -f "./eval.nix") == 'foo' ]]
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[[ $(nix eval attr -f "./eval.nix") == '{ foo = "bar"; }' ]]
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[[ $(nix eval attr --json -f "./eval.nix") == '{"foo":"bar"}' ]]
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[[ $(nix eval int -f - < "./eval.nix") == 123 ]]
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nix-instantiate --eval -E 'assert 1 + 2 == 3; true'
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[[ $(nix-instantiate -A int --eval "./eval.nix") == 123 ]]
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[[ $(nix-instantiate -A str --eval "./eval.nix") == '"foo"' ]]
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[[ $(nix-instantiate -A attr --eval "./eval.nix") == '{ foo = "bar"; }' ]]
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[[ $(nix-instantiate -A attr --eval --json "./eval.nix") == '{"foo":"bar"}' ]]
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[[ $(nix-instantiate -A int --eval - < "./eval.nix") == 123 ]]
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@ -53,6 +53,7 @@ nix_tests = \
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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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