Fix compilation of library

Cargo.toml

@@ -48,7 +48,7 @@ encoding = "0.2"
 shell-words = { version = "0.1.0", optional = true }
 unicode-width = "0.1.7"
 globset = "0.4"
-serde = "1.0"
+serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.8"
 semver = "0.9"
 

src/assets.rs

@@ -117,7 +117,7 @@ impl HighlightingAssets {
         }
     }
 
-    pub fn save_to_cache(&self, target_dir: &Path) -> Result<()> {
+    pub fn save_to_cache(&self, target_dir: &Path, current_version: &str) -> Result<()> {
         let _ = fs::create_dir_all(target_dir);
         let theme_set_path = target_dir.join("themes.bin");
         let syntax_set_path = target_dir.join("syntaxes.bin");
@@ -150,7 +150,7 @@ impl HighlightingAssets {
             "Writing metadata to folder {} ... ",
             target_dir.to_string_lossy()
         );
-        AssetsMetadata::new().save_to_folder(target_dir)?;
+        AssetsMetadata::new(current_version).save_to_folder(target_dir)?;
         println!("okay");
 
         Ok(())

src/assets_metadata.rs

@@ -2,7 +2,6 @@ use std::fs::File;
 use std::path::Path;
 use std::time::SystemTime;
 
-use clap::crate_version;
 use semver::Version;
 use serde::{Deserialize, Serialize};
 
@@ -17,9 +16,9 @@ pub struct AssetsMetadata {
 const FILENAME: &'static str = "metadata.yaml";
 
 impl AssetsMetadata {
-    pub(crate) fn new() -> AssetsMetadata {
+    pub(crate) fn new(current_version: &str) -> AssetsMetadata {
         AssetsMetadata {
-            bat_version: Some(crate_version!().into()),
+            bat_version: Some(current_version.to_owned()),
             creation_time: Some(SystemTime::now()),
         }
     }
@@ -64,9 +63,9 @@ impl AssetsMetadata {
         }
     }
 
-    pub fn is_compatible(&self) -> bool {
+    pub fn is_compatible_with(&self, current_version: &str) -> bool {
         let current_version =
-            Version::parse(crate_version!()).expect("bat follows semantic versioning");
+            Version::parse(current_version).expect("bat follows semantic versioning");
         let stored_version = self
             .bat_version
             .as_ref()

src/bin/bat/assets.rs

@@ -37,7 +37,7 @@ pub fn clear_assets() {
 pub fn assets_from_cache_or_binary() -> Result<HighlightingAssets> {
     let cache_dir = PROJECT_DIRS.cache_dir();
     if let Some(metadata) = AssetsMetadata::load_from_folder(&cache_dir)? {
-        if !metadata.is_compatible() {
+        if !metadata.is_compatible_with(crate_version!()) {
             return Err(format!(
                 "The binary caches for the user-customized syntaxes and themes \
                  in '{}' are not compatible with this version of bat ({}). To solve this, \

src/bin/bat/main.rs

@@ -22,13 +22,13 @@ use crate::{
     config::{config_file, generate_config_file},
 };
 use assets::{assets_from_cache_or_binary, cache_dir, clear_assets, config_dir};
-use bat::Controller;
+use clap::crate_version;
 use directories::PROJECT_DIRS;
 
 use bat::{
     config::{Config, InputFile, OrdinaryFile, StyleComponent, StyleComponents},
     errors::*,
-    HighlightingAssets,
+    Controller, HighlightingAssets,
 };
 
 fn run_cache_subcommand(matches: &clap::ArgMatches) -> Result<()> {
@@ -45,7 +45,7 @@ fn run_cache_subcommand(matches: &clap::ArgMatches) -> Result<()> {
         let blank = matches.is_present("blank");
 
         let assets = HighlightingAssets::from_files(source_dir, !blank)?;
-        assets.save_to_cache(target_dir)?;
+        assets.save_to_cache(target_dir, crate_version!())?;
     } else if matches.is_present("clear") {
         clear_assets();
     }