Add set-env! autodef; make :env obsolete

modules/lang/go/config.el

@@ -5,7 +5,7 @@
 ;;
 
 (after! go-mode
-  (set! :env "GOPATH" "GOROOT")
+  (set-env! "GOPATH" "GOROOT")
   (set! :repl 'go-mode #'gorepl-run)
   (set! :lookup 'go-mode
     :definition #'go-guru-definition

modules/lang/python/config.el

@@ -24,7 +24,7 @@ is loaded.")
   :config
   (add-hook! 'python-mode-hook #'(flycheck-mode highlight-numbers-mode))
 
-  (set! :env "PYTHONPATH" "PYENV_ROOT")
+  (set-env! "PYTHONPATH" "PYENV_ROOT")
   (set! :electric 'python-mode :chars '(?:))
   (set! :repl 'python-mode #'+python/repl)
 

modules/lang/ruby/config.el

@@ -16,7 +16,7 @@
   :config
   (set-company-backend! 'ruby-mode 'company-dabbrev-code)
   (set! :electric 'ruby-mode :words '("else" "end" "elseif"))
-  (set! :env "RBENV_ROOT")
+  (set-env! "RBENV_ROOT")
   (set! :repl 'ruby-mode #'inf-ruby) ; `inf-ruby'
   (setq ruby-deep-indent-paren t)
   ;; Don't interfere with my custom RET behavior

modules/lang/rust/config.el

@@ -1,7 +1,7 @@
 ;;; lang/rust/config.el -*- lexical-binding: t; -*-
 
 (after! rust-mode
-  (set! :env "RUST_SRC_PATH")
+  (set-env! "RUST_SRC_PATH")
   (set! :docset 'rust-mode "Rust")
   (setq rust-indent-method-chain t)