I really appreciate tooling that is written in Rust or Go that produce single binaries with minimal runtime dependencies.
Getting tooling written in for example Python to run reliably can be an exercise in frustration due to runtime environmental dependencies.
Why have an OS at all if every program is just going to package everything it needs?
It feels like we cheapened out. Rather than get good & figure out how to manage things well, rather than driver harder, we're bunting the problem. It sucks & it's lo-fi & a huge waste of resources.
As a long time Linux desktop user, I appreciate any efforts to improve compatibility between distros. Since Linux isn't actually an operating system, successfully running software built for Ubuntu on a Fedora box, for example, is entirely based on luck.
Where-as with the conventional dynamic library world one would just update openssl or whomever & keep going. Or if someone wanted to shim in an alternate but compatible library, one could. I personally never saw the binary compatibility issue as very big, and generally felt like there was a while where folks were getting good at packaging apps for each OS, making extra repos, that we've lost. So it seems predominantly to me like downsides, that we sell ourselves on, based off of outsized/overrepresented fear & negativity.
the computational model of a fleet of long-lived servers, which receive host/OS updates at one cadence, and serve applications that are deployed at a different cadence, is at this point a niche use case, basically anachronistic, and going away
applications are the things that matter, they provide the value, the OS and even shared libraries are really optimizations, details, that don't really make sense any more
the unit of maintenance is not a host, or a specific library, it's an application
vulnerabilities affect applications, if there is a vulnerability in some library that's used by a bunch of my applications then it's expected that i will need to re-deploy updated versions of those applications, this is not difficult, i am re-deploying updated versions of my applications all the time, because that is my deployment model
Beyond app delivery there's dozens of different utils folks rely on in their day to day. The new statically compiled world requiring each of these to be well maintained & promptly updated feels like an obvious regression.
Linux distros are thankfully moving towards embracing static linking, rather than putting their heads in the sand and pretending that dynamic linking isn't on its last legs.
the overwhelming majority of software that would ever be built by a system like buck2 is written and deployed in an industrial context
the share of software consumers that would use this class of software on personal linux laptops is statistically zero
really, the overwhelming majority of installations of distros like fedora or debian or whatever are also in industrial contexts, the model of software lifecycles that their maintainers seem to assume is wildly outdated
Dynamic linking on *nix has nothing to do with 70s era programming languages.
Did you consider the possibility that the incompatibility between monomorphization (possibly the dumbest term in all of programming) and dynamic linking should perhaps saying something about monomorphization, instead?
Given that dynamic linking as a concept came out of the C world, it has everything to do with them.
> Did you consider the possibility that the incompatibility between monomorphization (possibly the dumbest term in all of programming) and dynamic linking should perhaps saying something about monomorphization, instead?
Yes, I considered that possibility.
What elements of dynamic linking do you see as being connected to "70s era programming languages"?
> Yes, I considered that possibility.
Then I would urge you to reconsider.
there is no practical downside to a program including all of its dependencies, when evaluated against the alternative of those dependencies being determined at runtime and based on arbitrary state of the host system
monomorphization is good, not bad
the contents of /usr/lib/whatever should not impact the success or failure of executing a given program
There's also the problem that dynamic loading relies on almost all the same mechanisms as dynamic linking, so you can't get rid of those mechanisms just because your main build process used static linking.
smaller executable sizes, shared code in memory, synchronized security updates, are all basically value-zero, in any modern infrastructure
there is no "growing chorus" of developers or users saying otherwise, it is in fact precisely the opposite, statically linked binaries are going extremely well, they are very clearly the future
"modern infrastructure" seems like a bit of a giveaway of your mind set. yes, i know that there's a lot of stuff that now happens by having your web browser reach out to "infrastructure" and then the result is displayed in front of you.
But lots of people still use their computers to run applications outside the browser, where "modern infrastructure" means either nothing at all, or it means "their computer (or mobile platform)". the techniques mentioned in this subthread are all still very relevant in this context.
the infrastructural model i'm describing doesn't require applications to run in browsers, or imply that applications are slower, actually quite to the contrary, statically linked binaries tend to be faster
the model where an OS is one to many with applications works fine for personal machines, it's no longer relevant for most servers (shrug)
Not disagreeing that there many upsides to statically linking, but there are (other) situations where binary size matters. Rolling updates (or scaling horizontally) where the time is dominated by the time it takes to copy the new binaries, e.g.
> the model where an OS is one to many with applications works fine for personal machines, it's no longer relevant for most servers
Stacking services with different usage characteristics to increase utilization of underlying hardware is still relevant. I wouldn't be surprised if enabling very commonly included libraries to be loaded dynamically could save significant memory across a fleet .. and while the standard way this is done is fragile, it's not hard to imagine something that could be as reliable as static linking, esp in cases where you're using something like buck to build the world on every release anyway
> smaller executable sizes, shared code in memory, synchronized security updates, are all basically value-zero, in any modern infrastructure
This highlights the fact that you're extremely focused on one particular model of development, one where a single person or group deploys software that they are responsible for running and maintaining - often software that they've written themselves.
This is, obviously, an extremely appropriate paradigm for the enterprise. Static linking makes a lot of sense here. Python's virtual environments are basically the approved workaround for the fact that Python was built for systems that are not statically linked, and I cherish it for exactly that reason. Use Go on your servers - I do myself! But that doesn't mean it's appropriate everywhere.
Sometimes developers in this mindset forget there's a whole other world out there, a world of personal computers, that each have hundreds or thousands of applications installed. Applications on these systems are not deployed, they are installed. The mechanism by which this happens (on Linux) is via distributions and maintainers, and dynamic linking needs to be understood as designed for that ecosystem. Linux operating systems are built around making things simple, reliable, and secure for collections of software that are built and distributed by maintainers.
I'm firmly on the side of the fence that says that dynamic linking is the correct way to do that. All the benefits you mention are just a free bonus, of course, but I care about them as well. Smaller executable sizes? Huge win on my 256 GB SSD. Synchronized security updates? Of course I care about those as an end user!
end-user systems account for at best single-digit percentages of all systems relevant to this discussion
(mobile is not relevant to this discussion)
it's not that i forget about these use cases, it's that i don't really consider them relevant
tooling that supports industrial use cases like mine is not really able to support end-user use cases like yours at the same time
linux operating systems may have at one point been built around making things as you describe by distribution maintainers, but that model is anachronistic and no longer useful to the overwhelming majority of its user base, the huge majority of software is neither built nor distributed by maintainers, it is built and distributed by private enterprises
In a way they are. You deploy it to the store and then as people's computers download the update automatically.
A counter example to your claims about Linux is Android. Libraries are not shared between apps (beyond the android framework and libc). This is despite the fact that phones have limited storage.
> Then I would urge you to reconsider.
Done. No change to my beliefs.
> it's not that i forget about these use cases, it's that i don't really consider them relevant
Yes, exactly! It's an extremely myopic vision. You've spent this long thread arguing against dynamic linking on the basis of what is only a small fraction of total human / computer interactions! By "not relevant" you mean not relevant to the enterprise. I grant that of course - but these uses cases are (by definition) relevant to hundreds of millions of PC users.
> the huge majority of software is neither built nor distributed by maintainers, it is built and distributed by private enterprises
The overwhelming majority of the software I run is built and distributed by maintainers. Literally, there are only a few exceptions, like static-built games that rarely or never change and are (unfortunately) closed source. I daresay that's true for the majority of Linux users - the vast majority of the software we install and use is not "built and distributed by private enterprises".
This reality is what Linux-on-the-desktop is built for. There are millions of people who are going to want to continue using computers this way, and people like me will continue contributing to and developing distributions for this use case, even if shipping static or closed-source binaries to Linux users becomes common.
You raise the world of personal computers. And I think dynamic linking is absolutely a choice that has huge advantages for these folks.
There's other realms too. Embedded software needs smaller systems, so the dynamic library savings can be huge there. Hyper-scaler systems, where thousands of workloads can be running concurrently, can potentially scale to much much much higher usages with dynamic linking.
It's a little far afield, but with systems like webasssembly we're really looking less at a couple orgs within a company each shipping a monolith or two, and we're potentially looking way more at having lots of very small functions with a couple helper libraries interacting. This isn't exactly a classic dynamic library, but especially with the very safe sandboxing built in, the ideal model is far closer to something like dynamic linking where each library can be shared than it is shared.
like i'm not sure you understand the scale of enterprise linux. a single organization of not-that-very-many people can easily create and destroy hundreds of millions of deployed systems every day, each with a novel configuration of installed software. i've seen it countless times.
1. My point about Linux on the desktop is that there are in practice users like me who are already getting the (many) advantages of dynamic linking, and don't want to give up those advantages. To the point that some of us are going to support and work on distributions that continue the traditional Linux way in this area. In your view, the ecosystem has moved to software being built and distributed by private corporations. I don't think this has happened - on Windows software was always built and distributed this way; on (desktop) Linux it never was and largely still isn't!
2. My point about the desktop in general is that this use case matters to the vast majority of computer-using human beings much more than enterprise. The number of deployed containers that get created and destroyed every day doesn't change that fact, nor does the fact that Linux users are merely a tiny fraction of this desktop use case. This is what creates the myopia I was talking about - you're thinking about metrics like "number of systems deployed" whereas I'm thinking of number of human-computer interactions that are impacted. I don't think you can just discard what matters on the desktop or paint it as irrelevant. Desktop computing shouldn't be subordinate to the technical requirements of servers!
So to summarize the argument: (a) desktop use cases still matter because they comprise the majority of human-computer interactions, (b) dynamic linking and the maintainer model are the superior approach for desktop computing, and in fact complement each other in important ways, and (c) even if most desktop users can't take advantage of this model because of the dominance of closed source software and the corporate development model, desktop Linux can and does, and will hopefully continue to do so into the future.
i guess this is the crux of the discussion
linux desktop computing for sure _is_ subordinate to linux server computing, by any reasonable usage metric
i'm not trying to deny your experience in any way, nor suggest that dynamic linking goes away, or anything like that -- your use case is real, linux on the desktop is real, that use case isn't going away
but it is pretty clear at this point that linux on the server is wildly successful, linux on mobile is successful (for android), and that linux on the desktop is at best a niche use case
the majority of human interactions with linux occur via applications, services, tools, etc. that are served by linux servers, and not by software running on local machines like desktops or laptops
linux is a server operating system first and foremost
and where is the growth potential? is the industrial need going to become greatly newly empowered & helpful to this planet, to us? will it deliver & share the value potential out there? PC may be a smaller factor today, but i for one am incredibly fantastically excited to imagine a potential future 10 years from now where people start to PC again, albeit in a different way.
individual PCs have no chance. it's why the cloud has won. on-demand access wherever you are, consistent experience across devices is incredibly incredibly convenient. but networks of PCs that work well together is exciting, and we've only so very recently started emerging the capability to have nice easy to manage ops/automated multi-machine personal-computing. we've only recently emerged to maturity where a better, competitive personal computing is really conceivable.
it's been the alpha linux geeks learning how to compute and industrial players learning how to compute, and the invisible hand has been fat happy & plump from it, but imo there's such a huge potential here to re-open computing to persons, to create compelling interesting differently-capable sovereign/owned computing systems, that are free from so many of the small tatters & deprevations & enshittifications that cloud- that doing everyting on other people's computers as L-Users- unnerringly drops on us. we should & could be a more powerful, more technically-cultural culture, and i think we've severely underrated how much subtle progress there's been to make that a much less awful, specialized, painful, time-consuming, low-availability, disconnected effort than it used to be.
yes: if you're a company that tends to only run 1-20 applications, no, the memory-savings probably won't matter to you. that matches quite a large number of use cases. but a lot of companies run way more workloads than anyone would guess. quite a few just have no cost-control and/or just don't know, but there's probably some pretty sizable potential wins. it's even more important for hyper-scalers, where they're running many many customer processes at a time. even companies like facebook though, i forget the statistic, but sometime in the last quarter there was quote saying like >30% of their energy usage was just powering ram. willing to bet, they definitely optimize for binary size. they definitely look at it.
there's significant work being put towards drastically reducing scale of disk/memory usage across multiple containers, for example. composefs is one brilliant very exciting example that could help us radically scale up how much compute we can host. https://news.ycombinator.com/item?id=34524651
i also haven't seen the very important very critical other type of memory mentioned, cache. maybe we can just keep paying to add DRAM forever and ever (especially with CXL coming across the horizon), but the SRAM in your core-complex will almost always tend to be limited (although word is Zen4 might get within striking distance of 1GB which is EPIC). static builds are never going to share cache effectively. the instruction cache will always be unique per process. the most valuable expensive fancy memory on the computer is totally trashed & wasted by static binaries.
there's really nothing to recommend about static binaries, other than them being extremely stupid. them requiring not a single iota of thought to use is the primary win. (things like monomorphic optimization can be done in dynamic libraries with various metaprogramming & optimizing runtimes, hopefully one's that don't need to keep respawning duplicate copies ad-nauseum.)
i do think you're correct about the dominant market segment of computing, & you're speaking truthfully to a huge % of small & mid-sized businesses, where the computing needs are just incredibly simple & the ratio of processes to computers is quote low. their potential savings are not that high, since there's just not that much duplicate code to keep dynamically linking. but i also think that almost all interesting upcoming models of computing emphasize creating a lot more smaller lighter processes, that there are huge security & managability benefits, and that there's not a snowman's chance in hell that static-binary style computing has any role to play in the better possible futures we're opening up.
the benefit is that a statically linked binary will behave the same on all systems and doesn't need any specific runtime support above or beyond the bare minimum
this is important if you want a coherent deployment model at scale -- it cannot be the case that the same artifact X works fine on one subset of hosts, but not on another subset of hosts, because their openssl libraries are different or whatever
static linking is not stupid, it doesn't mean that hosts can only have like 10 processes on them, it doesn't imply that the computing needs it serves are simple, quite the opposite
future models of computing are shrinking stuff like the OS to zero, the thing that matters is the application, security (in the DLL sense you mean here) is not a property of a host, it's a property of an application, it seems pretty clear to me that static linking is where we're headed, see e.g. containers