0c2ced0224
The experimental `nix eval` command already supports a `--raw` flag.
This commit implements the same flag for the stable nix-instantiate command.
Until now instructions and scripts that didn't want to rely on experimental
features had to use workarounds such as:
nix-instantiate --eval <something> | tr -d \"
(which also undesirably also removes double quotation marks within the string), or
nix-instantiate --eval <something> | jq -j
(which undesirably depends on another package).
Co-authored-by: Raito Bezarius <raito@lix.systems>
Co-authored-by: Silvan Mosberger <silvan.mosberger@tweag.io>
Change-Id: Iced9a80ee7edd60af2385c5193485f1774175339
67 lines
2.8 KiB
Bash
67 lines
2.8 KiB
Bash
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 -E '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\nbar"' ]]
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[[ $(nix eval str --raw -f "./eval.nix") == $'foo\nbar' ]]
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[[ "$(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 eval --expr '{"assert"=1;bar=2;}')" == '{ "assert" = 1; bar = 2; }' ]]
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# Non-coercible values throws errors under `--raw`
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topLevelInteger="$(expectStderr 1 nix eval int --raw -f "./eval.nix")"
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[[ "$topLevelInteger" =~ "error: cannot coerce an integer to a string: 123" ]]
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# Top-level eval errors should be printed to stderr with a traceback.
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topLevelThrow="$(expectStderr 1 nix eval --expr 'throw "a sample throw message"')"
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[[ "$topLevelThrow" =~ "a sample throw message" ]]
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[[ "$topLevelThrow" =~ "caused by explicit throw" ]]
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# But errors inside something should print an elided version, and exit with 0.
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outputOfNestedThrow="$(nix eval --expr '{ throws = throw "a sample throw message"; }')"
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[[ "${outputOfNestedThrow}" == "{ throws = «error: a sample throw message»; }" ]]
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# Check if toFile can be utilized during restricted eval
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[[ $(nix eval --restrict-eval --expr 'import (builtins.toFile "source" "42")') == 42 ]]
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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\nbar"' ]]
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[[ $(nix-instantiate -A str --raw --eval "./eval.nix") == $'foo\nbar' ]]
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[[ "$(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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[[ $(nix-instantiate -A int --eval - < "./eval.nix") == 123 ]]
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[[ "$(nix-instantiate --eval -E '{"assert"=1;bar=2;}')" == '{ "assert" = 1; bar = 2; }' ]]
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# Non-coercible values throws errors under `--raw`
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topLevelInteger="$(expectStderr 1 nix-instantiate -A int --raw "./eval.nix")"
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[[ "$topLevelInteger" =~ "error: expression was expected to be a derivation or collection of derivations, but instead was an integer" ]]
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# Check that symlink cycles don't cause a hang.
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ln -sfn cycle.nix $TEST_ROOT/cycle.nix
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(! nix eval --file $TEST_ROOT/cycle.nix)
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# Check that relative symlinks are resolved correctly.
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mkdir -p $TEST_ROOT/xyzzy $TEST_ROOT/foo
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ln -sfn ../xyzzy $TEST_ROOT/foo/bar
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printf 123 > $TEST_ROOT/xyzzy/default.nix
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[[ $(nix eval --impure --expr "import $TEST_ROOT/foo/bar") = 123 ]]
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# Test that unknown settings are warned about
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out="$(expectStderr 0 nix eval --option foobar baz --expr '""' --raw)"
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[[ "$(echo "$out" | grep foobar | wc -l)" = 1 ]]
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