Convert Path to string before setting os.environ["JULIA_PROJECT"]

pysr/julia_helpers.py

@@ -15,14 +15,18 @@ def install(julia_project=None, quiet=False):  # pragma: no cover
 
     # Set JULIA_PROJECT so that we install in the pysr environment
     julia_project, is_shared = _get_julia_project(julia_project)
-    os.environ["JULIA_PROJECT"] = "@" + julia_project if is_shared else julia_project
+    os.environ["JULIA_PROJECT"] = "@" + str(julia_project) if is_shared else str(julia_project)
 
     import julia
 
     julia.install(quiet=quiet)
 
+    if is_shared:
+        # is_shared is only true if the julia_project arg was None, see _get_julia_project
+        Main = init_julia(None)
+    else
+        Main = init_julia(julia_project)
 
-    Main = init_julia(julia_project)
     Main.eval("using Pkg")
 
     io = "devnull" if quiet else "stderr"
@@ -81,7 +85,7 @@ def init_julia(julia_project=None):
     from julia.core import JuliaInfo, UnsupportedPythonError
 
     julia_project, is_shared = _get_julia_project(julia_project)
-    os.environ["JULIA_PROJECT"] = "@" + julia_project if is_shared else julia_project
+    os.environ["JULIA_PROJECT"] = "@" + str(julia_project) if is_shared else str(julia_project)
 
     try:
         info = JuliaInfo.load(julia="julia")