Namespaces in waiting

[Dave Tenny]

When I use 'lein repl' in some project context and get to the REPL prompt, there's an available but as yet not ... present ... namespace, i.e. (all-ns) won't list the namespace(s) created in the lein project directory tree.

Is there some API I can use to see a list these available but not active namespaces?

I'm guessing that looking at what's on the class path doesn't necessarily tell me what namespaces might be USE-able via (use 'x).

[Stephen C. Gilardi]

On Jan 1, 2014, at 3:26 PM, Dave Tenny <dave....@gmail.com> wrote:

> When I use 'lein repl' in some project context and get to the REPL prompt, there's an available but as yet not ... present ... namespace, i.e. (all-ns) won't list the namespace(s) created in the lein project directory tree.
>
> Is there some API I can use to see a list these available but not active namespaces?

I’m not aware of one.

> I'm guessing that looking at what's on the class path doesn't necessarily tell me what namespaces might be USE-able via (use 'x).

Walking the classpath including the contents of jar files would be a way to construct such a list of USE-able (or REQUIRE-able) namespaces. It would involve traversing the directory structure under each entry in the classpath and reading at least the first ns form in each candidate file (or jar entry).

—Steve

[Alex Ott]

You can use find-namespaces from http://clojure.github.io/tools.namespace/#clojure.tools.namespace.find to + clojure.java.classpath to get a list of all namespaces in current classpath...

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[Dave Tenny]

Thanks for the pointer.  This appears to work solely off the clojure source and may be very useful.  It raises all kinds of non-namespace-related questions for me though that I'll ask in another topic.

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[Dave Tenny]

I just stumbled across this, which looks very much like it may be what I wanted:  clojure.core/loaded-libs

http://clojure.github.io/clojure/clojure.core-api.html#clojure.core/loaded-libs

E.g.

$ lein repl

user=> (loaded-libs)

bultitude.core

cemerick.pomegranate

cemerick.pomegranate.aether

classlojure.core

clj-stacktrace.core

clj-stacktrace.repl

clj-stacktrace.utils

clojure.core

clojure.core.protocols

clojure.instant

...

clojure.zip

complete.core

dynapath.defaults

dynapath.dynamic-classpath

dynapath.util

flatland.useful.fn

flatland.useful.seq

flatland.useful.utils

jdt.cl

jdt.core

jdt.java

jdt.shell

leiningen.core.classpath

leiningen.core.eval

leiningen.core.main

leiningen.core.project

leiningen.core.ssl

leiningen.core.user

leiningen.core.utils

leiningen.repl

leiningen.trampoline

me.raynes.conch

me.raynes.conch.low-level

net.cgrand.parsley

net.cgrand.parsley.fold

net.cgrand.parsley.grammar

net.cgrand.parsley.lrplus

net.cgrand.parsley.stack

net.cgrand.parsley.tree

...

and so on