diff options
| -rw-r--r-- | doc/manual/src/release-notes/rl-next.md | 2 | ||||
| -rw-r--r-- | src/libcmd/installables.cc | 9 | ||||
| -rw-r--r-- | tests/eval.nix | 5 | ||||
| -rw-r--r-- | tests/eval.sh | 29 | ||||
| -rw-r--r-- | tests/local.mk | 1 |
5 files changed, 44 insertions, 2 deletions
diff --git a/doc/manual/src/release-notes/rl-next.md b/doc/manual/src/release-notes/rl-next.md index c869b5e2f..c9753f9aa 100644 --- a/doc/manual/src/release-notes/rl-next.md +++ b/doc/manual/src/release-notes/rl-next.md @@ -1 +1,3 @@ # Release X.Y (202?-??-??) + +* Various nix commands can now read expressions from stdin with `--file -`. diff --git a/src/libcmd/installables.cc b/src/libcmd/installables.cc index b7623d4ba..784117569 100644 --- a/src/libcmd/installables.cc +++ b/src/libcmd/installables.cc @@ -134,7 +134,9 @@ SourceExprCommand::SourceExprCommand() addFlag({ .longName = "file", .shortName = 'f', - .description = "Interpret installables as attribute paths relative to the Nix expression stored in *file*.", + .description = + "Interpret installables as attribute paths relative to the Nix expression stored in *file*. " + "If *file* is the character -, then a Nix expression will be read from standard input.", .category = installablesCategory, .labels = {"file"}, .handler = {&file}, @@ -695,7 +697,10 @@ std::vector<std::shared_ptr<Installable>> SourceExprCommand::parseInstallables( auto state = getEvalState(); auto vFile = state->allocValue(); - if (file) + if (file == "-") { + auto e = state->parseStdin(); + state->eval(e, *vFile); + } else if (file) state->evalFile(lookupFileArg(*state, *file), *vFile); else { auto e = state->parseExprFromString(*expr, absPath(".")); diff --git a/tests/eval.nix b/tests/eval.nix new file mode 100644 index 000000000..befbd17a9 --- /dev/null +++ b/tests/eval.nix @@ -0,0 +1,5 @@ +{ + int = 123; + str = "foo"; + attr.foo = "bar"; +} diff --git a/tests/eval.sh b/tests/eval.sh new file mode 100644 index 000000000..2e5ceb969 --- /dev/null +++ b/tests/eval.sh @@ -0,0 +1,29 @@ +source common.sh + +clearStore + +testStdinHeredoc=$(nix eval -f - <<EOF +{ + bar = 3 + 1; + foo = 2 + 2; +} +EOF +) +[[ $testStdinHeredoc == '{ bar = 4; foo = 4; }' ]] + +nix eval --expr 'assert 1 + 2 == 3; true' + +[[ $(nix eval int -f "./eval.nix") == 123 ]] +[[ $(nix eval str -f "./eval.nix") == '"foo"' ]] +[[ $(nix eval str --raw -f "./eval.nix") == 'foo' ]] +[[ $(nix eval attr -f "./eval.nix") == '{ foo = "bar"; }' ]] +[[ $(nix eval attr --json -f "./eval.nix") == '{"foo":"bar"}' ]] +[[ $(nix eval int -f - < "./eval.nix") == 123 ]] + + +nix-instantiate --eval -E 'assert 1 + 2 == 3; true' +[[ $(nix-instantiate -A int --eval "./eval.nix") == 123 ]] +[[ $(nix-instantiate -A str --eval "./eval.nix") == '"foo"' ]] +[[ $(nix-instantiate -A attr --eval "./eval.nix") == '{ foo = "bar"; }' ]] +[[ $(nix-instantiate -A attr --eval --json "./eval.nix") == '{"foo":"bar"}' ]] +[[ $(nix-instantiate -A int --eval - < "./eval.nix") == 123 ]] diff --git a/tests/local.mk b/tests/local.mk index b69fb9391..c686be049 100644 --- a/tests/local.mk +++ b/tests/local.mk @@ -53,6 +53,7 @@ nix_tests = \ build-remote-content-addressed-floating.sh \ nar-access.sh \ pure-eval.sh \ + eval.sh \ ca/post-hook.sh \ repl.sh \ ca/repl.sh \ |