Requires + aliases: Could not resolve symbol: proc/shell

[jcf]

Org-mode can be made to produce code of the following form:

(prn
 (binding [*out* (java.io.StringWriter.)]
   (require '[babashka.process :as proc])
   (proc/shell {:out :string} "ls")))

clj-kondo says there's an error:

org-bb.clj:2:2: warning: Unresolved namespace proc. Are you missing a require?
linting took 16ms, errors: 0, warnings: 1

And Babashka blows up with an exception:

----- Error --------------------------------------------------------------------
Type:     clojure.lang.ExceptionInfo
Message:  Could not resolve symbol: proc/shell
Data:     {:type :sci/error, :line 1, :column 1, :file "/Users/jcf/kb/daily/org-bb.clj", :phase "analysis"}
Location: /Users/jcf/kb/daily/org-bb.clj:4:4
Phase:    analysis

----- Context ------------------------------------------------------------------
1: (prn
2:  (binding [*out* (java.io.StringWriter.)]
3:    (require '[babashka.process :as proc])
4:    (proc/shell {:out :string} "ls")))
      ^--- Could not resolve symbol: proc/shell

----- Stack trace --------------------------------------------------------------
user/let             - /Users/jcf/kb/daily/org-bb.clj:4:4
user                 - /Users/jcf/kb/daily/org-bb.clj:2:2
clojure.core/let     - <built-in>
user/binding         - /Users/jcf/kb/daily/org-bb.clj:2:2
user                 - /Users/jcf/kb/daily/org-bb.clj:2:2
clojure.core/binding - <built-in>
user/prn             - /Users/jcf/kb/daily/org-bb.clj:2:2
user                 - /Users/jcf/kb/daily/org-bb.clj:2:2
clojure.core/prn     - <built-in>
user                 - /Users/jcf/kb/daily/org-bb.clj:1:1

I can require namespaces like clojure.string without issue, and use babashka.process as long as I omit the :as alias. Am I right in assuming Babashka (perhaps because of Sci) doesn't support defining aliases everywhere one might attempt to do so?

[borkdude]

This is normal behavior, an alias can only introduced in a top level form. Same as JVM Clojure.

AKA Giladi scenario: https://technomancy.us/143

[jcf]

Ahh, the thing that threw me was (require '[clojure.string :as str]) working just fine, or at least appearing to! That alias is created out of the box by Babashka which led me to believe I was able to create aliases in my source block without issue.

----- Error --------------------------------------------------------------------
Type:     clojure.lang.ExceptionInfo
Message:  Could not resolve symbol: stri/blank?
Data:     {:type :sci/error, :line 1, :column 1, :file "/var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj", :phase "analysis"}
Location: /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:4:1
Phase:    analysis

----- Context ------------------------------------------------------------------
1: (prn (binding [*out* (java.io.StringWriter.)](let [string '"Nope
2: "]
3: (require '[clojure.string :as stri])
4: (stri/blank? string))))
   ^--- Could not resolve symbol: stri/blank?

----- Stack trace --------------------------------------------------------------
user/let             - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:4:1
user                 - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:1:46
clojure.core/let     - <built-in>
user/let             - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:1:46
user                 - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:1:6
... (run with --debug to see elided elements)
clojure.core/binding - <built-in>
user/prn             - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:1:6
user                 - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:1:6
clojure.core/prn     - <built-in>
user                 - /var/folders/bt/72h1kztd54n6_fdtn41hn3tc0000gn/T/babel-pAaGTm/clojure-cmd-script-0P7BBn.clj:1:1

[ Babel evaluation exited with code 1 ]

I have code where I've set up aliases in Clojure via Org-mode in the past, so this is suprising to me. Further investigation is likely required. Thanks, @borkdude!