CLI and tools.deps support

[den1k]

Lots of projects now use tools.deps with the Clojure CLI.

Personally, I haven't used leiningen in over a year and avoid uberjar whereever I can (and I very well can with tools.deps!)

If a project has a deps.edn it can be run directly (no uberjars needed):
clj -m my-project.main

This is a much simpler, lightweight and flexible approach. It would be awesome if heroku supported it, especially given that it looks like the Clojure CLI is already installed by this buildpack.

[pmonks]

This post has a workaround that works, but I'll be the first to admit that it's a little janky...

[raymcdermott]

There might be others but I have made a buildpack that supports tools.deps natively

https://github.com/raymcdermott/heroku-deps-build-pack

[den1k]

Neat, thank you both! Ended up using dokku 😜

[pmonks]

@den1k any chance you might consider reopening this, for the benefit those of us who are using Heroku?

[den1k]

@pmonks ☝

[lhrb]

This post has a workaround that works, but I'll be the first to admit that it's a little janky...

As mentioned in the post, the clj command will not work. With clojure instead of clj I can not build with tools.build

This seems to be a bug: The log says Installing rlwrap and a few lines later Please install rlwrap for command editing or use "clojure" instead.

remote: -----> Building on the Heroku-20 stack
remote: -----> Determining which buildpack to use for this app
remote: -----> Clojure app detected
remote: -----> Installing JDK 1.8... done
remote: -----> Installing rlwrap... 
remote:        Get:1 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]
remote:        Get:2 http://apt.postgresql.org/pub/repos/apt focal-pgdg InRelease [86.6 kB]
remote:        Get:3 http://apt.postgresql.org/pub/repos/apt focal-pgdg/main amd64 Packages [349 kB]
remote:        Get:4 http://archive.ubuntu.com/ubuntu focal-security InRelease [114 kB]
remote:        Get:5 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
remote:        Get:6 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages [1,275 kB]
remote:        Get:7 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [11.3 MB]
remote:        Get:8 http://archive.ubuntu.com/ubuntu focal-security/main amd64 Packages [1,179 kB]
remote:        Get:9 http://archive.ubuntu.com/ubuntu focal-security/universe amd64 Packages [801 kB]
remote:        Get:10 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [1,085 kB]
remote:        Get:11 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [1,626 kB]
remote:        Fetched 18.2 MB in 2s (7,593 kB/s)
remote:        Reading package lists...
remote:        Reading package lists...
remote:        Building dependency tree...
remote:        The following NEW packages will be installed:
remote:          rlwrap
remote:        0 upgraded, 1 newly installed, 0 to remove and 2 not upgraded.
remote:        Need to get 98.2 kB of archives.
remote:        After this operation, 309 kB of additional disk space will be used.
remote:        Get:1 http://archive.ubuntu.com/ubuntu focal/universe amd64 rlwrap amd64 0.43-1build3 [98.2 kB]
remote:        Fetched 98.2 kB in 0s (266 kB/s)
remote:        Download complete and in download only mode
remote: -----> Installing Clojure 1.10.3.986 CLI tools
remote:        Downloading and expanding tar
remote:        Installing libs into /tmp/build_64e689d6/.heroku/clj/lib/clojure
remote:        Installing clojure and clj into /tmp/build_64e689d6/.heroku/clj/bin
remote:        Installing man pages into /tmp/build_64e689d6/.heroku/clj/share/man/man1
remote:        Removing download
remote:        Use clj -h for help.
remote: 
remote:  !     WARNING: No :min-lein-version found in project.clj; using 1.7.1.
remote:          You probably don't want this!
remote: 
remote: -----> Installing Leiningen
remote:        Downloading: leiningen-1.7.1-standalone.jar
remote:        To use Leiningen 2.x, add this to project.clj: :min-lein-version "2.0.0"
remote:        Writing: lein script
remote: -----> Building with Leiningen
remote:        Found bin/build; running it instead of default lein invocation.
remote:        Running: bin/build
remote:        Please install rlwrap for command editing or use "clojure" instead.
remote:  !     Failed to build.
remote:  !     Push rejected, failed to compile Clojure app.
remote: 
remote:  !     Push failed
remote: Verifying deploy...
remote: 
remote: !       Push rejected to morning-earth-25682.
remote: 
To https://git.heroku.com/morning-earth-25682.git

[pmonks]

@lhrb what's in your bin/build file? Here's a working example, if that's helpful: https://github.com/pmonks/for-science/blob/main/bin/build

[lhrb]

@pmonks thank you. I was using clj -T:build uber and swapped it with clojure which did not work out of the box.

#!/usr/bin/env bash
clojure -T:build uber

[pmonks]

And what's the error with clojure? Still the same thing (complaining about rlwrap)?

[lhrb]

No it says clojure.tools.reader not found
clojure/tools/namespace/parse.cljc
clojure.tools.reader I don't know, maybe herokus default clojure version is < 1.4?

remote:        Syntax error compiling at (clojure/tools/namespace/parse.cljc:55:19).
remote:        No such var: reader/read
remote:        
remote:        Full report at:
remote:        /tmp/clojure-1465252957741127728.edn
remote:  !     Failed to build.
remote:  !     Push rejected, failed to compile Clojure app.

[pmonks]

Which version of org.clojure/clojure are you using in your deps.edn file?

[lhrb]

I'm using org.clojure/clojure {:mvn/version "1.10.3"}