Verify jll availability (#323)

Author: rikhuijzer

Project.toml

@@ -1,6 +1,6 @@
 name = "Books"
 uuid = "939d5c6b-51ae-42e7-97ca-7564d0d4ad91"
-version = "3.0.0"
+version = "3.0.1"
 
 [deps]
 Artifacts = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"

src/Books.jl

@@ -26,8 +26,8 @@ using Markdown: MD
 using Memoize: @memoize
 using ProgressMeter: ProgressMeter
 using Revise: entr
-using pandoc_crossref_jll: pandoc_crossref_path
-using pandoc_jll: pandoc
+using pandoc_crossref_jll: pandoc_crossref_jll
+using pandoc_jll: pandoc_jll
 using Typst_jll: typst
 
 const GENERATED_DIR = "_gen"

src/build.jl

@@ -1,4 +1,11 @@
-const crossref_bin = string(pandoc_crossref_path)::String
+if !pandoc_jll.is_available()
+    throw(ErrorException("pandoc_jll.jl installation failed"))
+end
+if !pandoc_crossref_jll.is_available()
+    throw(ErrorException("pandoc_crossref_jll.jl installation failed"))
+end
+
+const crossref_bin = string(pandoc_crossref_jll.pandoc_crossref_path)::String
 const crossref = "--filter=$crossref_bin"
 const include_lua_filter = joinpath(PKGDIR, "src", "include-codeblocks.lua")
 const include_files = "--lua-filter=$include_lua_filter"
@@ -52,7 +59,7 @@ function copy_extra_directories(project)
 end
 
 function call_pandoc(args)::Tuple{Base.Process, String}
-    pandoc() do pandoc_bin
+    pandoc_jll.pandoc() do pandoc_bin
         cmd = `$pandoc_bin $args`
         stdout = IOBuffer()
         p = run(pipeline(cmd; stdout))