fix: deal with Pandoc AST versioning

Sponsored-by: author

1 files changed, 7 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index ed32d8c..4c8f5ff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,10 +11,16 @@ description = '''render diagram markup in a Pandoc abstract syntax tree as SVG''
 repository = "https://gitlab.com/larswirzenius/pandoc-filter-diagram"
 rust-version = "1.56.0"
 
+[features]
+default = ["ast_07"]
+ast_07 = ["pandoc_ast_07"]
+ast_08 = ["pandoc_ast_08"]
+
 [dependencies]
 anyhow = "1.0.50"
 base64 = "0.13.0"
-pandoc_ast = "0.8.0"
+pandoc_ast_07 = { package = "pandoc_ast", version = "0.7", optional = true }
+pandoc_ast_08 = { package = "pandoc_ast", version = "0.8", optional = true }
 pikchr = "0.1.1"
 roadmap = "0.4.3"
 serde = { version = "1.0.101", features = ["derive"] }