WIP: use toml_edit::easy instead of toml to fix array of arrays

toml-rs/toml#387

fontir/Cargo.toml

@@ -16,6 +16,7 @@ read-fonts = { git = 'https://github.com/googlefonts/fontations' }
 bitflags = "1.3"
 serde = {version = "1.0", features = ["derive"] }
 toml = "0.5.9"
+toml_edit = { version = "0.15.0", features = ["easy"] }
 bincode = "1.3.3"
 filetime = "0.2.18"
 thiserror = "1.0.37"

fontir/src/error.rs

@@ -43,5 +43,5 @@ pub enum WorkError {
     #[error("Conversion of glyph '{0}' to IR failed: {1}")]
     GlyphIrWorkError(String, String),
     #[error("toml error")]
-    TomlSerError(#[from] toml::ser::Error),
+    TomlSerError(#[from] toml_edit::ser::Error),
 }

fontir/src/ir.rs

@@ -1,5 +1,4 @@
 //! Serde types for font IR. See TODO:PublicLink.
-
 use std::collections::{BTreeMap, HashMap};
 
 use serde::{Deserialize, Serialize};

ufo2fontir/Cargo.toml

@@ -16,6 +16,7 @@ fontir = { version = "0.0.1", path = "../fontir" }
 
 serde = {version = "1.0", features = ["derive"] }
 toml = "0.5.9"
+toml_edit = { version = "0.15.0", features = ["easy"] }
 
 # TODO use a version of norad with https://github.com/linebender/norad/pull/272 once one exists
 # norad = "0.7.0"

ufo2fontir/src/source.rs

@@ -275,7 +275,7 @@ impl Work<()> for GlyphIrWork {
         // FIXME: this currently fails because TomlSerError(KeyNotString); need to find
         // a way to serialize a HashMap<PathBuf, Vec<DesignSpaceLocation>>
         let glyph_ir_toml =
-            toml::ser::to_string_pretty(&glyph_ir).map_err(WorkError::TomlSerError)?;
+            toml_edit::easy::to_string_pretty(&glyph_ir).map_err(WorkError::TomlSerError)?;
         fs::write(&self.ir_file, glyph_ir_toml).map_err(WorkError::IoError)?;
         Ok(())
     }