On Sat 11 Jul 2020 at 10:20 -0300, David Bremner wrote:

> I don't love the use of exec, but it is getting unwieldy to pass

It's already a config file written in Python which is a terrible sin.
So no need to apologise, I think it makes sense in this context.

> configuration options on the sphinx-build command line, and I
> anticipate further use of conditionals.
> ---
>  configure          |  8 ++++++++
>  doc/Makefile.local |  2 +-
>  doc/conf.py        | 11 ++++++++---
>  3 files changed, 17 insertions(+), 4 deletions(-)
>
> diff --git a/configure b/configure
> index 80cbac4f..177432db 100755
> --- a/configure
> +++ b/configure
> @@ -1548,6 +1548,14 @@ NOTMUCH_HAVE_PYTHON3_PYTEST=${have_python3_pytest}
>  PLATFORM=${platform}
>  EOF
>  
> +cat > sphinx.config <<EOF
> +# Generate by configure, run from doc/conf.py

Minor insignificant typo: Generated

> +EOF
> +if [ $WITH_EMACS = "1" ]; then
> +    printf "tags.add('WITH_EMACS')\n" >> sphinx.config
> +fi
> +printf "rsti_dir = '%s'\n" $(realpath emacs) >> sphinx.config
> +
>  # Finally, after everything configured, inform the user how to continue.
>  cat <<EOF
>  
> diff --git a/doc/Makefile.local b/doc/Makefile.local
> index 769438ed..598b6028 100644
> --- a/doc/Makefile.local
> +++ b/doc/Makefile.local
> @@ -4,7 +4,7 @@ dir := doc
>  
>  # You can set these variables from the command line.
>  SPHINXOPTS    := -q
> -SPHINXBUILD   = WITH_EMACS=${WITH_EMACS} RSTI_DIR=$(realpath emacs) sphinx-build
> +SPHINXBUILD   = sphinx-build
>  DOCBUILDDIR      := $(dir)/_build
>  
>  # Internal variables.
> diff --git a/doc/conf.py b/doc/conf.py
> index 70987ac5..fdff2a2c 100644
> --- a/doc/conf.py
> +++ b/doc/conf.py
> @@ -22,6 +22,13 @@ for pathdir in ['.', '..']:
>          with open(version_file,'r') as infile:
>              version=infile.read().replace('\n','')
>  
> +# read generated config
> +for pathdir in ['.', '..']:
> +    conf_file = os.path.join(location,pathdir,'sphinx.config')
> +    if os.path.exists(conf_file):
> +        with open(conf_file,'r') as infile:
> +            exec(''.join(infile.readlines()))
> +
>  # The full version, including alpha/beta/rc tags.
>  release = version
>  
> @@ -29,12 +36,10 @@ release = version
>  # directories to ignore when looking for source files.
>  exclude_patterns = ['_build']
>  
> -if os.environ.get('WITH_EMACS') == '1':
> +if tags.has('WITH_EMACS'):
>      # Hacky reimplementation of include to workaround limitations of
>      # sphinx-doc
>      lines = ['.. include:: /../emacs/rstdoc.rsti\n\n'] # in the source tree
> -    rsti_dir = os.environ.get('RSTI_DIR')
> -    # the other files are from the build tree
>      for file in ('notmuch.rsti', 'notmuch-lib.rsti', 'notmuch-show.rsti', 'notmuch-tag.rsti'):
>          lines.extend(open(rsti_dir+'/'+file))
>      rst_epilog = ''.join(lines)
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