60b7121d2c
We want to be able to write down `foo.drv^bar.drv^baz`:
`foo.drv^bar.drv` is the dynamic derivation (since it is itself a
derivation output, `bar.drv` from `foo.drv`).
To that end, we create `Single{Derivation,BuiltPath}` types, that are
very similar except instead of having multiple outputs (in a set or
map), they have a single one. This is for everything to the left of the
rightmost `^`.
`NixStringContextElem` has an analogous change, and now can reuse
`SingleDerivedPath` at the top level. In fact, if we ever get rid of
`DrvDeep`, `NixStringContextElem` could be replaced with
`SingleDerivedPath` entirely!
Important note: some JSON formats have changed.
We already can *produce* dynamic derivations, but we can't refer to them
directly. Today, we can merely express building or example at the top
imperatively over time by building `foo.drv^bar.drv`, and then with a
second nix invocation doing `<result-from-first>^baz`, but this is not
declarative. The ethos of Nix of being able to write down the full plan
everything you want to do, and then execute than plan with a single
command, and for that we need the new inductive form of these types.
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
135 lines
4.6 KiB
Bash
135 lines
4.6 KiB
Bash
source common.sh
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clearStore
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# Make sure that 'nix build' returns all outputs by default.
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nix build -f multiple-outputs.nix --json a b --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs |
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(keys | length == 2) and
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(.first | match(".*multiple-outputs-a-first")) and
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(.second | match(".*multiple-outputs-a-second"))))
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and (.[1] |
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(.drvPath | match(".*multiple-outputs-b.drv")) and
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(.outputs |
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(keys | length == 1) and
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(.out | match(".*multiple-outputs-b"))))
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'
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# Test output selection using the '^' syntax.
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nix build -f multiple-outputs.nix --json a^first --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs | keys == ["first"]))
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'
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nix build -f multiple-outputs.nix --json a^second,first --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs | keys == ["first", "second"]))
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'
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nix build -f multiple-outputs.nix --json 'a^*' --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs | keys == ["first", "second"]))
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'
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# Test that 'outputsToInstall' is respected by default.
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nix build -f multiple-outputs.nix --json e --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-e.drv")) and
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(.outputs | keys == ["a_a", "b"]))
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'
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# But not when it's overriden.
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nix build -f multiple-outputs.nix --json e^a_a --no-link
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nix build -f multiple-outputs.nix --json e^a_a --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-e.drv")) and
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(.outputs | keys == ["a_a"]))
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'
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nix build -f multiple-outputs.nix --json 'e^*' --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-e.drv")) and
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(.outputs | keys == ["a_a", "b", "c"]))
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'
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# test buidling from non-drv attr path
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nix build -f multiple-outputs.nix --json 'e.a_a.outPath' --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-e.drv")) and
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(.outputs | keys == ["a_a"]))
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'
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# Illegal type of string context
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expectStderr 1 nix build -f multiple-outputs.nix 'e.a_a.drvPath' \
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| grepQuiet "has a context which refers to a complete source and binary closure."
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# No string context
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expectStderr 1 nix build --expr '""' --no-link \
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| grepQuiet "has 0 entries in its context. It should only have exactly one entry"
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# Too much string context
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expectStderr 1 nix build --impure --expr 'with (import ./multiple-outputs.nix).e.a_a; "${drvPath}${outPath}"' --no-link \
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| grepQuiet "has 2 entries in its context. It should only have exactly one entry"
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nix build --impure --json --expr 'builtins.unsafeDiscardOutputDependency (import ./multiple-outputs.nix).e.a_a.drvPath' --no-link | jq --exit-status '
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(.[0] | match(".*multiple-outputs-e.drv"))
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'
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# Test building from raw store path to drv not expression.
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drv=$(nix eval -f multiple-outputs.nix --raw a.drvPath)
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if nix build "$drv^not-an-output" --no-link --json; then
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fail "'not-an-output' should fail to build"
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fi
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if nix build "$drv^" --no-link --json; then
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fail "'empty outputs list' should fail to build"
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fi
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if nix build "$drv^*nope" --no-link --json; then
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fail "'* must be entire string' should fail to build"
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fi
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nix build "$drv^first" --no-link --json | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs |
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(keys | length == 1) and
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(.first | match(".*multiple-outputs-a-first")) and
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(has("second") | not)))
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'
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nix build "$drv^first,second" --no-link --json | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs |
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(keys | length == 2) and
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(.first | match(".*multiple-outputs-a-first")) and
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(.second | match(".*multiple-outputs-a-second"))))
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'
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nix build "$drv^*" --no-link --json | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-a.drv")) and
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(.outputs |
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(keys | length == 2) and
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(.first | match(".*multiple-outputs-a-first")) and
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(.second | match(".*multiple-outputs-a-second"))))
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'
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# Make sure that `--impure` works (regression test for https://github.com/NixOS/nix/issues/6488)
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nix build --impure -f multiple-outputs.nix --json e --no-link | jq --exit-status '
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(.[0] |
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(.drvPath | match(".*multiple-outputs-e.drv")) and
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(.outputs | keys == ["a_a", "b"]))
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'
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# Make sure that `--stdin` works and does not apply any defaults
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printf "" | nix build --no-link --stdin --json | jq --exit-status '. == []'
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printf "%s\n" "$drv^*" | nix build --no-link --stdin --json | jq --exit-status '.[0]|has("drvPath")'
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