Highlight error locations
This is a simple implementation of an error printer that highlights the
error location with squiggly lines, for example:
File "dune", line 1, characters 14-21:
(copy_files %{read:x}/*)
^^^^^^
The message is not displayed in some cases, like if the file does not
exist, or if the location spans multiple lines.
Signed-off-by: Etienne Millon <me@emillon.org>
This commit is contained in:
Etienne Millon
parent
1cd5050861
commit
06bc3b1d0c
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@ -7,6 +7,8 @@ next
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- Fix error message when the source directory of `copy_files` does not exist.
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(#1120, fix #1099, @emillon)
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- Highlight error locations in error messages (#1121, @emillon)
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1.1.1 (08/08/2018)
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------------------
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27
src/loc.ml
27
src/loc.ml
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@ -61,12 +61,35 @@ let of_pos (fname, lnum, cnum, enum) =
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; stop = { pos with pos_cnum = enum }
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}
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let print ppf { start; stop } =
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let file_line path n =
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Io.with_file_in ~binary:false path
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~f:(fun ic ->
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for _ = 1 to n - 1 do
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ignore (input_line ic)
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done;
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input_line ic
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)
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let print ppf loc =
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let { start; stop } = loc in
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let start_c = start.pos_cnum - start.pos_bol in
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let stop_c = stop.pos_cnum - start.pos_bol in
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let pp_file_excerpt pp () =
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let whole_file = start_c = 0 && stop_c = 0 in
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if not whole_file then
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let path = Path.of_string start.pos_fname in
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if Path.exists path then
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let line = file_line path start.pos_lnum in
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if stop_c <= String.length line then
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let len = stop_c - start_c in
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Format.fprintf pp "%s\n%*s\n" line
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stop_c
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(String.make len '^')
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in
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Format.fprintf ppf
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"@{<loc>File \"%s\", line %d, characters %d-%d:@}@\n"
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"@{<loc>File \"%s\", line %d, characters %d-%d:@}@\n%a"
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start.pos_fname start.pos_lnum start_c stop_c
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pp_file_excerpt ()
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let warn t fmt =
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Errors.kerrf ~f:print_to_console
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@ -1,11 +1,15 @@
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$ dune runtest --root absolute-path
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Entering directory 'absolute-path'
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File "jbuild", line 3, characters 16-24:
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(deps ((alias /foo/bar)))))
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^^^^^^^^
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Error: Invalid alias!
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Tried to reference path outside build dir: "/foo/bar"
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[1]
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$ dune runtest --root outside-workspace
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Entering directory 'outside-workspace'
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File "jbuild", line 4, characters 16-39:
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(deps ((alias ${ROOT}/../../../foobar)))))
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^^^^^^^^^^^^^^^^^^^^^^^
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Error: path outside the workspace: ./../../../foobar from default
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[1]
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@ -6,6 +6,8 @@ All builtin variables are lower cased in Dune:
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$ dune runtest --root dune-upper
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Entering directory 'dune-upper'
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File "dune", line 3, characters 41-46:
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(action (with-stdout-to %{null} (echo %{MAKE}))))
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^^^^^
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Error: %{MAKE} was renamed to '%{make}' in the 1.0 version of the dune language
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[1]
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@ -2,6 +2,8 @@ No ppx driver found
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$ dune build foo1.cma
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File "dune", line 6, characters 13-18:
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(preprocess (pps)))
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^^^^^
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Error: You must specify at least one ppx rewriter.
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[1]
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@ -9,6 +11,8 @@ Too many drivers
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$ dune build foo2.cma
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File "dune", line 13, characters 13-28:
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(preprocess (pps ppx1 ppx2)))
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^^^^^^^^^^^^^^^
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Error: Too many incompatible ppx drivers were found: foo.driver2 and
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foo.driver1.
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[1]
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@ -17,6 +21,8 @@ Not compatible with Dune
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$ dune build foo3.cma
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File "dune", line 20, characters 13-28:
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(preprocess (pps ppx_other)))
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^^^^^^^^^^^^^^^
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Error: No ppx driver were found. It seems that ppx_other is not compatible
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with Dune. Examples of ppx rewriters that are compatible with Dune are ones
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using ocaml-migrate-parsetree, ppxlib or ppx_driver.
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@ -5,6 +5,8 @@ Duplicating a field in a dune file is an error:
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$ dune build --root dune
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File "dune", line 4, characters 1-20:
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(action (echo bar)))
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^^^^^^^^^^^^^^^^^^^
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Error: Field "action" is present too many times
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[1]
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@ -15,6 +17,8 @@ For backward compatibility, it is only a warning in jbuild files:
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$ dune build --root jbuild
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File "jbuild", line 4, characters 2-21:
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(action (echo bar))))
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^^^^^^^^^^^^^^^^^^^
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Warning: Field "action" is present several times, previous occurrences are ignored.
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Entering directory 'jbuild'
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bar
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@ -1,3 +1,5 @@
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$ dune build --display short
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File "dune", line 3, characters 22-26:
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(modules :standard \ fake))
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^^^^
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Warning: Module Fake is excluded but it doesn't exist.
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@ -2,6 +2,8 @@ When using dune exec, the external-lib-deps command refers to the executable:
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$ dune exec ./x.exe
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File "dune", line 3, characters 12-26:
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(libraries does-not-exist))
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^^^^^^^^^^^^^^
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Error: Library "does-not-exist" not found.
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Hint: try: dune external-lib-deps --missing ./x.exe
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[1]
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@ -2,6 +2,8 @@ fallback isn't allowed in dune
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$ dune build --root dune1
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File "dune", line 2, characters 1-11:
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(fallback)
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^^^^^^^^^^
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Error: 'fallback' was renamed to '(mode fallback)' in the 1.0 version of the dune language
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[1]
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@ -9,6 +11,8 @@ fallback isn't allowed in dune
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$ dune build --root dune2
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File "dune", line 2, characters 1-17:
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(fallback false)
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^^^^^^^^^^^^^^^^
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Error: 'fallback' was renamed to '(mode fallback)' in the 1.0 version of the dune language
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[1]
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@ -3,6 +3,8 @@ We are dropping support for findlib in dune
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$ dune build --root in-dune target.txt
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Entering directory 'in-dune'
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File "dune", line 2, characters 25-37:
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(write-file target.txt %{findlib:pkg})
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^^^^^^^^^^^^
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Error: %{findlib:..} was renamed to '%{lib:..}' in the 1.0 version of the dune language
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[1]
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@ -11,5 +13,7 @@ But it must still be available in jbuild files
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$ dune build --root in-jbuild target.txt
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Entering directory 'in-jbuild'
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File "jbuild", line 4, characters 23-42:
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(write-file target.txt ${findlib:pkg:file})
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^^^^^^^^^^^^^^^^^^^
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Error: Public library "pkg" not found
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[1]
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@ -8,6 +8,8 @@ Reproduction case for #484. The error should point to src/jbuild
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$ dune build @install
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File "src/dune", line 4, characters 14-15:
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(libraries a b c))
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^
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Error: Library "a" not found.
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Hint: try: dune external-lib-deps --missing @install
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[1]
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@ -16,6 +18,8 @@ When passing --dev, the profile should be displayed only once (#1106):
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$ jbuilder build --dev @install
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File "src/dune", line 4, characters 14-15:
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(libraries a b c))
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^
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Error: Library "a" not found.
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Hint: try: dune external-lib-deps --missing --profile dev @install
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[1]
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@ -24,6 +28,8 @@ With dune and an explicit profile, it is the same:
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$ dune build --profile dev @install
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File "src/dune", line 4, characters 14-15:
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(libraries a b c))
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^
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Error: Library "a" not found.
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Hint: try: dune external-lib-deps --missing --profile dev @install
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[1]
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@ -3,6 +3,8 @@ If the source directory does not exist, an error message is printed:
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$ dune build --root no-dir demo.exe
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Entering directory 'no-dir'
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File "dune", line 1, characters 13-23:
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(copy_files# "no_dir/*")
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^^^^^^^^^^
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Error: cannot find directory: no_dir
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[1]
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@ -11,5 +13,7 @@ This works also is a file exists with the same name:
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$ dune build --root file-with-same-name demo.exe
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Entering directory 'file-with-same-name'
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File "dune", line 1, characters 13-23:
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(copy_files# "no_dir/*")
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^^^^^^^^^^
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Error: cannot find directory: no_dir
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[1]
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@ -1,5 +1,7 @@
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$ dune runtest
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File "jbuild", line 4, characters 20-42:
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(preprocess (pps (ppx_that_doesn't_exist)))))
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^^^^^^^^^^^^^^^^^^^^^^
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Error: Library "ppx_that_doesn't_exist" not found.
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Hint: try: dune external-lib-deps --missing @runtest
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[1]
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@ -1,4 +1,6 @@
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$ jbuilder build @foo
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File "src/dune", line 4, characters 10-17:
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(c_names stubs/x))
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^^^^^^^
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Error: File src/stubs/x.c is not part of the current directory group. This is not allowed.
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[1]
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@ -1,4 +1,6 @@
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$ jbuilder build @bar
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File "dune", line 2, characters 7-14:
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(name foo/bar)
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^^^^^^^
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Error: "foo/bar" is not a valid alias name
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[1]
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@ -1,4 +1,6 @@
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$ dune build
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File "dune", line 1, characters 0-28:
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(rule (run %{bin:echo} foo))
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Error: Rule has no targets specified
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[1]
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@ -17,9 +17,13 @@ argument of "package".
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$ cd package-without-pub-name && dune build -p foo
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File "dune", line 3, characters 1-14:
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(package foo))
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^^^^^^^^^^^^^
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Error: This field is useless without a (public_name ...) field.
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[1]
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$ cd package-without-pub-name-jbuild && dune build -p foo
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File "jbuild", line 3, characters 2-15:
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(package foo)))
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^^^^^^^^^^^^^
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Warning: This field is useless without a (public_name ...) field.
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@ -1,5 +1,7 @@
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$ dune build --display short
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File "dune", line 1, characters 0-15:
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(include a.inc)
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^^^^^^^^^^^^^^^
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Error: Recursive inclusion of jbuild files detected:
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File a.inc is included from c.inc:1
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--> included from b.inc:1
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@ -6,11 +6,15 @@
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$ dune runtest missing-backend
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File "missing-backend/dune", line 3, characters 1-15:
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(inline_tests))
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^^^^^^^^^^^^^^
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Error: No inline tests backend found.
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[1]
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$ dune runtest too-many-backends
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File "too-many-backends/dune", line 17, characters 1-15:
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(inline_tests)
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^^^^^^^^^^^^^^
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Error: Too many independent inline tests backends found:
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- "backend_tmb1" in _build/default/too-many-backends
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- "backend_tmb2" in _build/default/too-many-backends
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|
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@ -35,6 +35,8 @@ Errors:
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$ dune build --display short --root b foo.cma
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Entering directory 'b'
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File "dune", line 3, characters 33-34:
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(modules_without_implementation x))
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^
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Warning: The following modules must be listed here as they don't have an implementation:
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- y
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This will become an error in the future.
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@ -43,10 +45,14 @@ Errors:
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$ dune build --display short --root c foo.cma
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Entering directory 'c'
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File "dune", line 3, characters 33-34:
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(modules_without_implementation x))
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^
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Error: Module X doesn't exist.
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[1]
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$ dune build --display short --root d foo.cma
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Entering directory 'd'
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File "dune", line 3, characters 33-34:
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(modules_without_implementation x))
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^
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Error: Module X has an implementation, it cannot be listed here
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[1]
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|
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@ -3,5 +3,7 @@ inappropariate place:
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$ dune build
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File "dune", line 1, characters 14-21:
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(copy_files %{read:x}/*)
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^^^^^^^
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Error: %{read:..} isn't allowed in this position
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[1]
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@ -1,5 +1,7 @@
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$ dune runtest --display short
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File "dune", line 44, characters 19-42:
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(deps (glob_files dir-that-doesnt-exist/*)))
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^^^^^^^^^^^^^^^^^^^^^^^
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Warning: Directory dir-that-doesnt-exist doesn't exist.
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diff alias runtest
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diff alias runtest
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|
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@ -11,6 +11,8 @@ Path that needs to be searched:
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$ dune runtest --root search-path
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Entering directory 'search-path'
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File "dune", line 3, characters 14-32:
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(action (run foo-does-not-exist)))
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^^^^^^^^^^^^^^^^^^
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Error: Error: Program foo-does-not-exist not found in the tree or in PATH (context: default)
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[1]
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|
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@ -36,12 +36,16 @@ Test some error cases
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$ dune build --root error2
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Entering directory 'error2'
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File "dune", line 2, characters 0-29:
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(include_subdirs unqualified)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Error: The 'include_subdirs' stanza cannot appear more than once
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[1]
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$ dune build --root error3
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Entering directory 'error3'
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File "src/gen/dune", line 1, characters 0-23:
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(executable (name gen))
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^^^^^^^^^^^^^^^^^^^^^^^
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Error: This stanza is not allowed in a sub-directory of directory with (include_subdirs unqualified).
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Hint: add (include_subdirs no) to this file.
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[1]
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|
|
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@ -1,5 +1,7 @@
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$ dune exec ./bar.exe
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File "dune", line 3, characters 7-14:
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(name foo.bar)
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^^^^^^^
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||||
Warning: invalid library name.
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||||
Hint: library names must be non-empty and composed only of the following characters: 'A'..'Z', 'a'..'z', '_' or '0'..'9'.
|
||||
This is temporary allowed for libraries with (wrapped false).
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||||
|
|
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|||
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|
@ -5,6 +5,8 @@ the name field can be omitted for libraries when public_name is present
|
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this isn't possible for older syntax <= (1, 0)
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||||
$ dune build --root no-name-lib-syntax-1-0
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||||
File "dune", line 1, characters 22-25:
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(library (public_name foo))
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^^^
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||||
Error: name field cannot be omitted before version 1.1 of the dune language
|
||||
[1]
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||||
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||||
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|
@ -15,6 +17,8 @@ executable(s) stanza works the same way
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|||
|
||||
$ dune build --root no-name-exes-syntax-1-0
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||||
File "dune", line 1, characters 0-36:
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||||
(executables (public_names foo bar))
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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||||
Error: name field may not be omitted before dune version 1.1
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||||
[1]
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||||
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||||
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@ -22,6 +26,8 @@ there's only a public name but it's invalid as a name
|
|||
|
||||
$ dune build --root public-name-invalid-name
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File "dune", line 1, characters 22-28:
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||||
(library (public_name c.find))
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^^^^^^
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||||
Error: invalid library name.
|
||||
Hint: library names must be non-empty and composed only of the following characters: 'A'..'Z', 'a'..'z', '_' or '0'..'9'.
|
||||
Public library names don't have this restriction. You can either change this public name to be a valid library name or add a "name" field with a valid library name.
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||||
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@ -33,6 +39,8 @@ it's just a warning
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$ dune build --root public-name-invalid-wrapped-false
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Info: creating file dune-project with this contents: (lang dune 1.1)
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||||
File "dune", line 3, characters 14-21:
|
||||
(public_name foo.bar))
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||||
^^^^^^^
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||||
Error: invalid library name.
|
||||
Hint: library names must be non-empty and composed only of the following characters: 'A'..'Z', 'a'..'z', '_' or '0'..'9'.
|
||||
Public library names don't have this restriction. You can either change this public name to be a valid library name or add a "name" field with a valid library name.
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||||
|
|
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|||
|
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@ -9,6 +9,8 @@ In expands to a file name, and registers this as a dependency.
|
|||
$ dune build --root dune @test-dep
|
||||
Entering directory 'dune'
|
||||
File "dune", line 13, characters 17-47:
|
||||
(echo "%{path:file-that-does-not-exist}\n")
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
Error: %{path:..} was renamed to '%{dep:..}' in the 1.0 version of the dune language
|
||||
[1]
|
||||
|
||||
|
|
@ -20,6 +22,8 @@ This form does not exist, but displays an hint:
|
|||
$ dune build --root dune-invalid @test-path-no-dep
|
||||
Entering directory 'dune-invalid'
|
||||
File "dune", line 7, characters 17-54:
|
||||
(echo "%{path-no-dep:file-that-does-not-exist}\n")
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
Error: %{path-no-dep:..} was deleted in version 1.0 of the dune language
|
||||
[1]
|
||||
|
||||
|
|
@ -53,5 +57,7 @@ This form does not exist, but displays an hint:
|
|||
$ dune build --root jbuild-invalid @test-dep
|
||||
Entering directory 'jbuild-invalid'
|
||||
File "jbuild", line 5, characters 16-37:
|
||||
(action (cat ${dep:generated-file}))))
|
||||
^^^^^^^^^^^^^^^^^^^^^
|
||||
Error: ${dep:..} is only available since version 1.0 of the dune language
|
||||
[1]
|
||||
|
|
|
|||
|
|
@ -3,6 +3,8 @@ public libraries may not have private dependencies
|
|||
$ dune build --display short --root private-dep
|
||||
Entering directory 'private-dep'
|
||||
File "dune", line 8, characters 12-22:
|
||||
(libraries privatelib)
|
||||
^^^^^^^^^^
|
||||
Error: Library "privatelib" is private, it cannot be a dependency of a public library.
|
||||
You need to give "privatelib" a public name.
|
||||
ocamldep .publiclib.objs/publiclib.ml.d
|
||||
|
|
@ -27,6 +29,8 @@ Unless they introduce private runtime dependencies:
|
|||
$ dune build --display short --root private-runtime-deps
|
||||
Entering directory 'private-runtime-deps'
|
||||
File "jbuild", line 16, characters 20-31:
|
||||
(preprocess (pps (private_ppx)))
|
||||
^^^^^^^^^^^
|
||||
Error: Library "private_runtime_dep" is private, it cannot be a dependency of a public library.
|
||||
You need to give "private_runtime_dep" a public name.
|
||||
ocamlc .private_ppx.objs/private_ppx.{cmi,cmo,cmt}
|
||||
|
|
|
|||
|
|
@ -4,6 +4,8 @@ that ${@} is not quoted and doesn't contain exactly 1 element
|
|||
$ dune build --root bad x
|
||||
Entering directory 'bad'
|
||||
File "dune", line 3, characters 27-35:
|
||||
(action (with-stdout-to %{targets} (echo foo))))
|
||||
^^^^^^^^
|
||||
Error: Variable %{targets} expands to 2 values, however a single value is expected here. Please quote this atom.
|
||||
[1]
|
||||
|
||||
|
|
@ -27,10 +29,14 @@ The targets should only be interpreted as a single path when quoted
|
|||
|
||||
$ dune build @quoted --root filename-space
|
||||
File "dune", line 4, characters 17-18:
|
||||
(action (echo %{read:foo bar.txt})))
|
||||
^
|
||||
Error: This character is not allowed inside %{...} forms
|
||||
[1]
|
||||
|
||||
$ dune build @unquoted --root filename-space
|
||||
File "dune", line 4, characters 17-18:
|
||||
(action (echo %{read:foo bar.txt})))
|
||||
^
|
||||
Error: This character is not allowed inside %{...} forms
|
||||
[1]
|
||||
|
|
|
|||
|
|
@ -1,6 +1,8 @@
|
|||
$ echo '(jbuild_version 1)' > dune
|
||||
$ dune build
|
||||
File "dune", line 1, characters 0-18:
|
||||
(jbuild_version 1)
|
||||
^^^^^^^^^^^^^^^^^^
|
||||
Error: 'jbuild_version' was deleted in version 1.0 of the dune language
|
||||
[1]
|
||||
$ rm -f dune
|
||||
|
|
@ -12,6 +14,8 @@
|
|||
$ echo '(executable (name x) (link_executables false))' > dune
|
||||
$ dune build
|
||||
File "dune", line 1, characters 21-45:
|
||||
(executable (name x) (link_executables false))
|
||||
^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
Error: 'link_executables' was deleted in version 1.0 of the dune language
|
||||
[1]
|
||||
$ rm -f dune
|
||||
|
|
@ -19,6 +23,8 @@
|
|||
$ echo '(alias (name x) (deps x) (action (run %{<})))' > dune
|
||||
$ dune build
|
||||
File "dune", line 1, characters 40-42:
|
||||
(alias (name x) (deps x) (action (run %{<})))
|
||||
^^
|
||||
Error: %{<} was deleted in version 1.0 of the dune language.
|
||||
Use a named dependency instead:
|
||||
|
||||
|
|
|
|||
|
|
@ -8,10 +8,14 @@ are readable.
|
|||
|
||||
$ dune build --root b
|
||||
File "dune", line 4, characters 12-17:
|
||||
(libraries (lib)))
|
||||
^^^^^
|
||||
These parentheses are no longer necessary with dune, please remove them.
|
||||
[1]
|
||||
|
||||
$ dune build --root c
|
||||
File "dune", line 3, characters 7-14:
|
||||
(deps (x y z)))
|
||||
^^^^^^^
|
||||
These parentheses are no longer necessary with dune, please remove them.
|
||||
[1]
|
||||
|
|
|
|||
|
|
@ -2,6 +2,8 @@ jbuild still discovers workspaces as usual
|
|||
|
||||
$ jbuilder build --root jbuilder-default-name
|
||||
File "jbuild-workspace", line 1, characters 10-24:
|
||||
(context (does-not-exist))
|
||||
^^^^^^^^^^^^^^
|
||||
Error: Unknown constructor does-not-exist
|
||||
[1]
|
||||
|
||||
|
|
@ -14,6 +16,8 @@ dune uses a versioned file. If the version is missing, then we get an error.
|
|||
|
||||
$ dune build --root dune-no-version
|
||||
File "dune-workspace", line 1, characters 0-19:
|
||||
(context (default))
|
||||
^^^^^^^^^^^^^^^^^^^
|
||||
Error: Invalid first line, expected: (lang <lang> <version>)
|
||||
[1]
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue