Let eglot-jl.jl determine the default project path

README.org

@@ -27,15 +27,15 @@ To work around this issue, you can:
 1. Set =eglot-connect-timeout= to a very high value.
    - Progress of the SymbolServer can be monitored in the =*EGLOT
      (ProjectName/julia-mode) stderr*= buffer.
-2. Run the following:
+2. Run the following, from your project directory:
 
 #+begin_src sh
-  JULIA_LOAD_PATH="@" julia --project=path/to/eglot-jl/ path/to/eglot-jl/eglot-jl.jl path/to/project ""
+  julia --project=path/to/eglot-jl/ path/to/eglot-jl/eglot-jl.jl
 #+end_src
 
 The SymbolServer is finished with caching dependencies when it
 displays:
 
 #+begin_quote
-[ Info: store set
+[ Info: Received new data from Julia Symbol Server.
 #+end_quote

eglot-jl.el

@@ -2,7 +2,7 @@
 
 ;; Copyright (C) 2019 Adam Beckmeyer
 
-;; Version: 1.2.0
+;; Version: 2.0.0
 ;; Author: Adam Beckmeyer <[email protected]>
 ;; Maintainer: Adam Beckmeyer <[email protected]>
 ;; URL: https://github.com/non-Jedi/eglot-jl
@@ -52,22 +52,8 @@ An empty string uses the default depot for ‘eglot-jl-julia-command’
 when the JULIA_DEPOT_PATH environment variable is not set."
   :type 'string)
 
-(defcustom eglot-jl-default-environment "~/.julia/environment/v1.2"
-  "Path to the Julia environment used if file not in a Julia Project."
-  :type 'string)
-
 (defconst eglot-jl-base (file-name-directory load-file-name))
 
-(defun eglot-jl--env (dir)
-  "Find the most relevant Julia Project for a given directory.
-If a parent directory to DIR contains a file JuliaProject.toml or
-Project.toml, that parent directory is used.  If not,
-`eglot-jl-default-environment' is used."
-  (expand-file-name (if dir (or (locate-dominating-file dir "JuliaProject.toml")
-                                (locate-dominating-file dir "Project.toml")
-                                eglot-jl-default-environment)
-                      eglot-jl-default-environment)))
-
 ;; Make project.el aware of Julia projects
 (defun eglot-jl--project-try (dir)
   "Return project instance if DIR is part of a julia project.
@@ -85,7 +71,7 @@ Otherwise returns nil"
     ,@eglot-jl-julia-flags
     ,(concat "--project=" eglot-jl-base)
     ,(expand-file-name "eglot-jl.jl" eglot-jl-base)
-    ,(eglot-jl--env (buffer-file-name))
+    ,(file-name-directory (buffer-file-name))
     ,eglot-jl-depot))
 
 ;;;###autoload

eglot-jl.jl

@@ -1,3 +1,23 @@
+# Usage:
+#   julia --project=path/to/eglot-jl path/to/eglot-jl/eglot-jl.jl [SOURCE_PATH] [DEPOT_PATH]
+
+# Get the source path. In order of increasing priority:
+# - default value:  pwd()
+# - command-line:   ARGS[1]
+src_path = length(ARGS) >= 1 ? ARGS[1] : pwd()
+
+# Get the depot path. In order of increasing priority:
+# - default value:  ""
+# - environment:    ENV["JULIA_DEPOT_PATH"]
+# - command-line:   ARGS[2]
+depot_path = get(ENV, "JULIA_DEPOT_PATH", "")
+if length(ARGS) >= 2
+    depot_path = ARGS[2]
+end
+
+# Get the project environment from the source path
+project_path = something(Base.current_project(src_path), Base.load_path_expand(LOAD_PATH[2])) |> dirname
+
 # Make sure that we only load packages from this environment specifically.
 empty!(LOAD_PATH)
 push!(LOAD_PATH, "@")
@@ -9,5 +29,6 @@ Pkg.instantiate()
 
 using LanguageServer, SymbolServer
 
-server = LanguageServerInstance(stdin, stdout, ARGS[1], ARGS[2])
+@info "Running language server" env=Base.load_path()[1] src_path project_path depot_path
+server = LanguageServerInstance(stdin, stdout, project_path, depot_path)
 run(server)