News for hackers. Stuff that matters.
Re:How Python virtual environments work by danielvaughn on Monday March 13, 2023 @02:05PM (#35139826)
I just began writing Python a few months ago. For years prior, I'd been a JS dev, and while NPM can be frustrating at times, I never encountered so many issues as I have in Python. It's crazy.

I'm now curious whether there are languages out there that do have a really nice packaging system.

Re:How Python virtual environments work by cstrahan on Monday March 13, 2023 @02:34PM (#35140302)
FWIW, I find Cargo to be one of the biggest reasons I like Rust so much — maybe even more than anything to do with Rust itself or safe code.

I’ll often look for command line tools written in Rust, but not because of Rust fanboyism, but because I know I can just git clone the project and immediately start hacking on a new feature I need or a quick bug fix. In almost every other language I have to jump through one million hoops before I can build and run whatever it is, let alone have a nice developer experience (autocomplete, go to definition, etc).

Re:How Python virtual environments work by adgjlsfhk1 on Monday March 13, 2023 @03:02PM (#35140763)
Yeah, one of Julia's best decisions was taking heavy inspiration from Rust for the package manager. Rust was 100% the first language to get dependency management right.
Re:How Python virtual environments work by okeuro49 on Monday March 13, 2023 @03:18PM (#35140997)
> Rust was 100% the first language to get dependency management right.

In my experience, Java, Go, PHP, NodeJS have all got similar package management that works.

Re:How Python virtual environments work by fiddlerwoaroof on Monday March 13, 2023 @04:16PM (#35141865)
Yeah, npm was the first good package manager. It gets a lot of hate but my experience is that its strategy is the optimal solution for the problem it solves. And, I think a lot of things people complain about (lots of trivial packages, huge dependency trees, etc.) are an effect of solving the packaging problem well: if you make it easy to add dependencies, people will take advantage of that to add lots of dependencies.
Re:How Python virtual environments work by justinsaccount on Monday March 13, 2023 @05:32PM (#35143099)
See my above comment, there's a reason why all of your examples work:

Java package managers tend to install packages written in java

Go installs packages written in go, and maybe C using cgo

Cargo installs packages written in rust

php package managers install packages written in PHP, extra extensions are rare

etc

People having trouble with python are NOT having trouble with python. They are having trouble because they are trying to use packages that are just python bindings to absolutely massively complex c++ and Fortran libraries.

Often people using python don't even have a C compiler installed (let alone a fortran one for the scientific stuff), so pip blows up the first time they try to install a package that hasn't been pre-built for their system+python version.

Re:How Python virtual environments work by Nadya on Monday March 13, 2023 @02:16PM (#35139997)
Personally, zero complaints about Cargo (Rust) and very minimal complaints about NuGet (C#/.NET). My issues around NuGet are probably self-created because I refuse to learn the CLI [0] for it and I've had occasional issues with Visual Studio's UI for managing things.

https://learn.microsoft.com/en-us/nuget/reference/nuget-exe-...

Re:How Python virtual environments work by evntdrvn on Monday March 13, 2023 @06:13PM (#35143759)
In a lot of ways, Paket is significantly better than NuGet, if you ever want to try something new :) It uses a lockfile approach like Cargo, has better dependency resolution, etc https://fsprojects.github.io/Paket/index.html
Re:How Python virtual environments work by dvlsg on Monday March 13, 2023 @02:15PM (#35139987)
Cargo (Rust) is pretty solid. Most of my minor complaints (like being unable to add packages from the CLI) have been resolved with time, as well.
Re:How Python virtual environments work by cpach on Monday March 13, 2023 @02:35PM (#35140317)
IMHO, Go’s packaging system is very pleasant to use.
Re:How Python virtual environments work by throwawaymaths on Monday March 13, 2023 @05:03PM (#35142577)
Elixir's packaging system is quite good. We went from empty project to working stable diffusion in 2h. 1.75 of those hours was installing CUDA.
Re:How Python virtual environments work by ChancyChance on Monday March 13, 2023 @05:05PM (#35142630)
Same here, I've been using yarn for years, and when I started using venv, I didn't understand why it had to be so complex. Even after reading this article, I still don't see why it is so complex! Yarn/npm has the right idea: dependencies go in the working folder and expect that hierarchy/protocol. Problem solved. The only problem I have with yarn/npm is the problem any package manager has and that is the attrition of dependencies and how to rank their security risk.
Re:How Python virtual environments work by hot_gril on Monday March 13, 2023 @06:38PM (#35144099)
I can't think of any package/dep systems I actually like other than npm. And they're even starting to screw that up with the `import` weirdness instead of the `require` that's been so simple and easy.

Rust's system is probably the next best.

ObjC/Swift packaging is a flaming disaster in practice, unless it's improved since I jumped that ship. Last time, I remember every single project having to rely on Cocoapods.

Re:How Python virtual environments work by Nadya on Monday March 13, 2023 @07:19PM (#35144635)
Weirdness? `require` was Node weirdness because Javascript lacked imports/exports at the time. The ES6 syntax is remarkably better, allows imports to be async, and doesn't need to run the code to see what should be assigned to `module.exports` allowing it to be statically analyzed which allows tree-shaking. Node's CJS syntax will only work for Node requiring that you transpile and bundle it for browsers. The ES6 syntax will work for Node and the browser.

I see anyone sticking with CJS syntax the same way I see Python devs who continue writing 2.7 code by choice in new projects and not because they are maintaining older projects.

Re:How Python virtual environments work by hot_gril on Monday March 13, 2023 @07:37PM (#35144876)
I call `import` weird because there are several different ways to do the same thing, listed at https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... and summarized under "there are four forms of import declarations." Four! And I always forget the different ways they work.

Sure tree-shaking and browser support are nice, but they didn't have to make the syntax this complicated to achieve that. Not an issue with other languages.

Re:How Python virtual environments work by Nadya on Monday March 13, 2023 @09:39PM (#35146172)
* * *
Re:How Python virtual environments work by hot_gril on Monday March 13, 2023 @11:38PM (#35147134)
Your explanation makes sense, but imo the import syntax shouldn't even require (no pun intended) an explanation.

The bigger thing is, I'm subject to however the deps I use want to export things, so they use a mix of those. Maybe in some cases you have to use `require` even if you don't want to, I forget.

Re:How Python virtual environments work by danielvaughn on Monday March 13, 2023 @08:11PM (#35145271)
I remember trying to use cocoapods back in 2015/2016, right around the time that Swift was technically available but not ready for production. I literally gave up trying to import packages, it was a shitshow.
Re:How Python virtual environments work by hot_gril on Monday March 13, 2023 @08:17PM (#35145334)
I first used Swift at the same time. Cocoapods actually worked, but only after fighting it all day. Swift was recommended over ObjC, but it was broken. The compiler itself would segfault if I used the wrong map syntax. If the compiler worked, it took about 20X as long as an ObjC build. Core Data managed to produce non-optional objects that were nil in some cases.

Swift got fixed over time (which is why every basic SO question has 20 different answers for each Swift version), but it still sucks, and so does UIKit, and Xcode. That whole toolchain has been relegated to being just a dependency behind React Native for me. I mean look at the shitfest involved just to get a substring https://stackoverflow.com/questions/39677330/how-does-string...

Re:How Python virtual environments work by danielvaughn on Monday March 13, 2023 @08:55PM (#35145749)
I try not to hate on projects publicly, because I know a lot of devs smarter than me pour their sweat and tears into these things. But imagine releasing a new language in 2014 and fucking up strings.
Re:How Python virtual environments work by hot_gril on Monday March 13, 2023 @11:41PM (#35147164)
Yeah my patience for Apple's native dev environment is down to nothing nowadays. At least I'll crap on my own work just as much if I think I made a mistake.
Re:How Python virtual environments work by lmm on Monday March 13, 2023 @08:04PM (#35145199)
The JVM (maven) has quietly had everything working really well for decades. You rarely hear much about it because it just works, and what you hear is mostly people hating on it because it wouldn't let them shoot themselves in the foot. Cargo works much the same way AIUI.