Download bridgestan repo as artifact for BridgeStan.jl

.gitignore

@@ -31,6 +31,7 @@ bridgestan.Rcheck/
 # Julia
 .juliahistory
 build/
+Manifest.toml
 
 .DS_Store
 

docs/languages/julia.md

@@ -23,6 +23,7 @@
 
 
 This assumes you have followed the [Getting Started guide](../getting-started.rst) to install BridgeStan's pre-requisites and downloaded a copy of the BridgeStan source code.
+Note that the Julia interface has the ability to install the BridgeStan source if the ``BRIDGESTAN`` environment variable is not set.
 
 
 To install the Julia interface, you can either install it directly from Github by running the following inside a Julia REPL

julia/Artifacts.toml

@@ -0,0 +1,7 @@
+[bridgestan]
+git-tree-sha1 = "730b3ee2b8c9fd643dcb2bee6c0ea5995db142d7"
+lazy = true
+
+    [[bridgestan.download]]
+    sha256 = "b66a01322b650022bbc7944fa5229cbc90bab63fab28b063c0eae714cd927872"
+    url = "https://github.com/roualdes/bridgestan/releases/download/v1.0.0/bridgestan-1.0.0.tar.gz"

julia/Project.toml

@@ -2,3 +2,9 @@ name = "BridgeStan"
 uuid = "c88b6f0a-829e-4b0b-94b7-f06ab5908f5a"
 authors = ["Brian Ward <bward@flatironinstitute.org>", "Bob Carpenter <bcarpenter@flatironinstitute.org", "Edward Roualdes <eroualdes@csuchico.edu>"]
 version = "1.0.0"
+
+[deps]
+LazyArtifacts = "4af54fe1-eca0-43a8-85a7-787d91b784e3"
+
+[compat]
+julia = "1.8"

julia/docs/src/julia.md

@@ -77,5 +77,6 @@ param_unconstrain_json!
 ### Compilation utilities
 ```@docs
 compile_model
+get_bridgestan_path
 set_bridgestan_path!
 ```

julia/src/BridgeStan.jl

@@ -1,5 +1,7 @@
 module BridgeStan
 
+using LazyArtifacts
+
 export StanModel,
     name,
     model_info,
@@ -18,6 +20,7 @@ export StanModel,
     log_density,
     log_density_gradient,
     log_density_hessian,
+    get_bridgestan_path,
     set_bridgestan_path!,
     compile_model
 

julia/src/compile.jl

@@ -3,12 +3,20 @@ function get_make()
     get(ENV, "MAKE", Sys.iswindows() ? "mingw32-make.exe" : "make")
 end
 
-function get_bridgestan()
+"""
+    get_bridgestan_path() -> String
+
+Return the path the the BridgeStan directory.
+
+If the environment variable `BRIDGESTAN` is set, this will be returned. Otherwise, this
+function downloads an artifact containing the BridgeStan repository and returns the path to
+the extracted directory.
+"""
+function get_bridgestan_path()
     path = get(ENV, "BRIDGESTAN", "")
     if path == ""
-        error(
-            "BridgeStan path was not set, compilation will not work until you call `set_bridgestan_path!()`",
-        )
+        artifact_path = artifact"bridgestan"
+        path = joinpath(artifact_path, only(readdir(artifact_path)))
     end
     return path
 end
@@ -58,7 +66,7 @@ function compile_model(
     stanc_args::AbstractVector{String} = String[],
     make_args::AbstractVector{String} = String[],
 )
-    bridgestan = get_bridgestan()
+    bridgestan = get_bridgestan_path()
     validate_stan_dir(bridgestan)
 
     if !isfile(stan_file)

julia/test/compile_tests.jl

@@ -1,12 +1,12 @@
 using BridgeStan
 using Test
 
-models = joinpath(@__DIR__, "../../test_models/")
 
 
-@testset "compile good" begin
-    BridgeStan.set_bridgestan_path!("../..")
+models = joinpath(BridgeStan.get_bridgestan_path(), "test_models/")
+
 
+@testset "compile good" begin
     stanfile = joinpath(models, "multi", "multi.stan")
     lib = splitext(stanfile)[1] * "_model.so"
     rm(lib, force = true)
@@ -36,3 +36,9 @@ end
     @test_throws ErrorException BridgeStan.set_bridgestan_path!("dummy")
     @test_throws ErrorException BridgeStan.set_bridgestan_path!(models)
 end
+
+@testset "download artifact" begin
+    withenv("BRIDGESTAN" => nothing) do
+        BridgeStan.validate_stan_dir(BridgeStan.get_bridgestan_path())
+    end
+end

julia/test/model_tests.jl

@@ -3,9 +3,10 @@ using Test
 using Printf
 
 function load_test_model(name::String, with_data = true)
-    lib = joinpath(@__DIR__, @sprintf("../../test_models/%s/%s_model.so", name, name))
+    bridgestan = BridgeStan.get_bridgestan_path()
+    lib = joinpath(bridgestan, @sprintf("test_models/%s/%s_model.so", name, name))
     if with_data
-        data = joinpath(@__DIR__, @sprintf("../../test_models/%s/%s.data.json", name, name))
+        data = joinpath(bridgestan, @sprintf("test_models/%s/%s.data.json", name, name))
     else
         data = ""
     end