Get an array or just a string of all installed Julia packages

[le...@neilson-levin.org]

I would like to generate a list of all the packages I've installed.  Each time I install Julia (which I've done a lot recently, but will settle down now that 0.4.0 is released--Yeah!) I need to install packages again.  It would be nice to have a list.  It would be nicer to be able to install them as a batch, but since makes take a long time and can be fragile I am OK without a batch.

Basically, I want pip freeze > mypkgs.txt within the Julia repl.  Unfortunately, since Pkg.status is ::void it produces no output to capture.  I tried pipeline.  No go.

Should be easy;  seems an obvious request.  Writing a little Julia script is a fine solution, but without being able to capture Pkg.status not sure what it would look like.

Thanks

[Michael Hatherly]

Pkg.installed() returns the currently installed packages and the REQUIRE file found in your .julia/0.4/ folder lists all the explicitly installed packages. So if you copy that file over to a fresh package directory and run Pkg.resolve() that should install everything that you’d need.

— Mike

​

[Tim Holy]

Try this:
(new installation) Pkg.init()
cp OldInstallation/.julia/v0.4/REQUIRE NewInstallation/.julia/v0.4/
(new installation) Pkg.update()

As for your original question, collect(keys(Pkg.installed())) should do what
you ask.

--Tim

[le...@neilson-levin.org]

Great.  Thanks.

When you say (new installation) Pkg.update()     what is (new installation) on the command line?  Does it mean cd over there first?