Man page - dune-subst(1)

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DUNE-SUBST

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
COMMON OPTIONS
MORE HELP
EXIT STATUS
BUGS
SEE ALSO

NAME

dune-subst - Substitute watermarks in source files.

SYNOPSIS

dune subst [ --build-info ] [ OPTION ]…

DESCRIPTION

Substitute %%ID%% strings in source files, in a similar fashion to what topkg does in the default configuration.

This command is only meant to be called when a user pins a package to its development version. Especially it replaces %%VERSION%% strings by the version obtained from the vcs. Currently only git is supported and the version is obtained from the output of:

$ git describe --always --dirty --abbrev=7

dune subst substitutes the variables that topkg substitutes with the default configuration:
- %%NAME%% , the name of the project (from the dune-project file)
- %%VERSION%% , output of git describe --always --dirty --abbrev=7
- %%VERSION_NUM%% , same as %%VERSION%% but with a potential leading 'v' or 'V' dropped
- %%VCS_COMMIT_ID%% , commit hash from the vcs
- %%PKG_MAINTAINER%% , contents of the maintainer: field from the opam file
- %%PKG_AUTHORS%% , contents of the authors: field from the opam file
- %%PKG_HOMEPAGE%% , contents of the homepage: field from the opam file
- %%PKG_ISSUES%% , contents of the issues: field from the opam file
- %%PKG_DOC%% , contents of the doc: field from the opam file
- %%PKG_LICENSE%% , contents of the license: field from the opam file
- %%PKG_REPO%% , contents of the repo: field from the opam file

In order to call dune subst when your package is pinned, add this line to the build: field of your opam file:

[dune "subst"] {pinned}

Note that this command is meant to be called only from opam files and behaves a bit differently from other dune commands. In particular it doesn't try to detect the root and must be called from the root of the project.

OPTIONS

--build-info

Show build information.

COMMON OPTIONS

These options are common to all commands.
--debug-backtraces

Always print exception backtraces.

--help [= FMT ] (default= auto )

Show this help in format FMT . The value FMT must be one of auto , pager , groff or plain . With auto , the format is pager or plain whenever the TERM env var is dumb or undefined.

--version

Show version information.

MORE HELP

Use ‘ dune COMMAND --help' for help on a single command.

EXIT STATUS

dune subst exits with:

0

on success.

1

if an error happened.

130

if it was interrupted by a signal.

BUGS

Check bug reports at https://github.com/ocaml/dune/issues

SEE ALSO

dune(1)