Donate
diff --git a/download.tt b/download.tt index 8b0bee8a6c..7676f8c9ce 100644 --- a/download.tt +++ b/download.tt @@ -1,4 +1,4 @@ -[% WRAPPER layout.tt title="Getting Nix / NixOS" hideTitle=1 menu='nixos' %] +[% WRAPPER layout.tt title="Getting Nix / NixOS" %] [% USE IO.All %] [% USE JSON.Escape %] diff --git a/features.tt b/features.tt new file mode 100644 index 0000000000..fccbde914b --- /dev/null +++ b/features.tt @@ -0,0 +1,491 @@ +[% WRAPPER layout.tt title="Features" %] + +
+
+
+[% END %]
diff --git a/flake.nix b/flake.nix
index d2ad24981b..aea900ca1e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -53,6 +53,8 @@
xhtml1
jq
python3
+ python3Packages.click
+ python3Packages.colorama
entr
];
diff --git a/governance.tt b/governance.tt
index e6c6673316..37f6f14ee7 100644
--- a/governance.tt
+++ b/governance.tt
@@ -1,4 +1,4 @@
-[% WRAPPER layout.tt hideTitle=1 title="Governance" menu='nixos' %]
+[% WRAPPER layout.tt title="Governance" %]
+
+
+
+ About Nix
+Nix is a purely functional package manager. This means + that it treats packages like values in purely functional programming + languages such as Haskell — they are built by functions that don’t + have side-effects, and they never change after they have been built. + Nix stores packages in the Nix store, usually the directory + /nix/store, where each package has its own unique + subdirectory such as + +
+ +/nix/store/b6gvzjyb2pg0kjfwrjmg1vfhh54ad73z-firefox-33.1/ ++ +
+ + where b6gvzjyb2pg0… is a unique identifier for the package that + captures all its dependencies (it’s a cryptographic hash of the + package’s build dependency graph). This enables many powerful + features.
+ + +Multiple versions
+ +You can have multiple versions or variants of a package installed + at the same time. This is especially important when different + applications have dependencies on different versions of the same + package — it prevents the “DLL hell”. Because of the hashing scheme, + different versions of a package end up in different paths in the Nix + store, so they don’t interfere with each other.
+ +An important consequence is that operations like upgrading or + uninstalling an application cannot break other applications, since + these operations never “destructively” update or delete files that are + used by other packages.
+ + +Complete dependencies
+ +Nix helps you make sure that package dependency specifications are + complete. In general, when you’re making a package for a package + management system like RPM, you have to specify for each package what + its dependencies are, but there are no guarantees that this + specification is complete. If you forget a dependency, then the + component will build and work correctly on your machine if + you have the dependency installed, but not on the end user's machine + if it's not there.
+ +Since Nix on the other hand doesn’t install packages in “global” + locations like /usr/bin but in package-specific directories, + the risk of incomplete dependencies is greatly reduced. This is + because tools such as compilers don’t search in per-packages + directories such as + /nix/store/5lbfaxb722zp…-openssl-0.9.8d/include, so if a + package builds correctly on your system, this is because you specified + the dependency explicitly.
+ +Runtime dependencies are found by scanning binaries for the hash + parts of Nix store paths (such as r8vvq9kq…). This may sound + risky, but it works extremely well.
+ + +Multi-user support
+ +Starting at version 0.11, Nix has multi-user support. This means + that non-privileged users can securely install software. Each user + can have a different profile, a set of packages in the Nix + store that appear in the user’s PATH. If a user installs a + package that another user has already installed previously, the + package won’t be built or downloaded a second time. At the same time, + it is not possible for one user to inject a Trojan horse into a + package that might be used by another user.
+ + +Atomic upgrades and rollbacks
+ +Since package management operations never overwrite packages in the + Nix store but just add new versions in different paths, they are + atomic. So during a package upgrade, there is no time window + in which the package has some files from the old version and some + files from the new version — which would be bad because a program + might well crash if it’s started during that period.
+ +And since packages aren’t overwritten, the old versions are still + there after an upgrade. This means that you can roll back to + the old version:
+ +nix-env --upgrade some-packages +nix-env --rollback ++ + +
Garbage collection
+ +When you uninstall a package like this…
+ +nix-env --uninstall firefox
+
+
+ the package isn’t deleted from the system right away (after all, + you might want to do a rollback, or it might be in the profiles of + other users). Instead, unused packages can be deleted safely by + running the garbage collector:
+ +nix-collect-garbage
+
+
+ This deletes all packages that aren’t in use by any user profile or + by a currently running program.
+ + +Functional package language
+ +Packages are built from Nix expressions, which is a simple + functional language. A Nix expression describes everything that goes + into a package build action (a “derivation”): other packages, sources, + the build script, environment variables for the build script, etc. + Nix tries very hard to ensure that Nix expressions are + deterministic: building a Nix expression twice should yield + the same result.
+ +Because it’s a functional language, it’s easy to support building + variants of a package: turn the Nix expression into a function and + call it any number of times with the appropriate arguments. Due to + the hashing scheme, variants don’t conflict with each other in the Nix + store.
+ + +Transparent source/binary deployment
+ +Nix expressions generally describe how to build a package from + source, so an installation action like
+ +nix-env --install firefox
+
+
+ could cause quite a bit of build activity, as not only + Firefox but also all its dependencies (all the way up to the C library + and the compiler) would have to built, at least if they are not + already in the Nix store. This is a source deployment model. + For most users, building from source is not very pleasant as it takes + far too long. However, Nix can automatically skip building from + source and instead use a binary cache, a web server that + provides pre-built binaries. For instance, when asked to build + /nix/store/b6gvzjyb2pg0…-firefox-33.1 from source, Nix would + first check if the file + http://cache.nixos.org/b6gvzjyb2pg0….narinfo exists, and if + so, fetch the pre-built binary referenced from there; otherwise, it + would fall back to building from source.
+ + + + + +Nix Packages collection
+ +We provide a large set of Nix expressions containing thousands of + existing Unix packages, the Nix Packages + collection (Nixpkgs).
+ + +Managing build environments
+ +Nix is extremely useful for developers as it makes it easy to + automatically set up the build environment for a package. Given a + Nix expression that describes the dependencies of your package, the + command nix-shell will build or download those + dependencies if they’re not already in your Nix store, and then start + a Bash shell in which all necessary environment variables (such as + compiler search paths) are set.
+ +For example, the following command gets all dependencies of the Pan + newsreader, as described by its + Nix expression:
+ +nix-shell '<nixpkgs>' -A pan
+
+
+ You’re then dropped into a shell where you can edit, build and test + the package:
+ +tar xf $src +cd pan-* +./configure +make +./pan/gui/pan ++ +
Since Nix packages are reproducible and have complete dependency + specifications, Nix makes an excellent basis for a continuous build + system.
+ + +Portability
+ +Nix runs on Linux and macOS.
+ + +NixOS
+ +NixOS is a Linux distribution based on Nix. It uses Nix not just + for package management but also to manage the system configuration + (e.g., to build configuration files in /etc). This means, + among other things, that it is easy to roll back the entire + configuration of the system to an earlier state. Also, users can + install software without root privileges. Read + more…
+ + +License
+ +Nix is released under the terms of the GNU + LGPLv2.1 or (at your option) any later version.
+ +
+ 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ About NixOS
+NixOS is a GNU/Linux distribution that aims to + improve the state of the art in system configuration management. In + existing distributions, actions such as upgrades are dangerous: + upgrading a package can cause other packages to break, upgrading an + entire system is much less reliable than reinstalling from scratch, + you can’t safely test what the results of a configuration change will + be, you cannot easily undo changes to the system, and so on. We want + to change that. NixOS has many innovative features:
+ + +Declarative system configuration model
+ +In NixOS, the entire operating system — the kernel, applications, + system packages, configuration files, and so on — is built by the Nix package manager from a + description in a purely + functional build language. The fact that it’s purely functional + essentially means that building a new configuration cannot overwrite + previous configurations. Most of the other features follow from + this.
+ +You configure a NixOS system by writing a specification of the + functionality that you want on your machine in + /etc/nixos/configuration.nix. For instance, here is a + minimal configuration of a machine running an SSH daemon:
+ +{
+ boot.loader.grub.device = "/dev/sda";
+
+ fileSystems."/".device = "/dev/sda1";
+
+ services.sshd.enable = true;
+}
+
+
+ After changing /etc/nixos/configuration.nix, you realise + the configuration by running this command:
+ +$ nixos-rebuild switch ++ +
This command does everything necessary to make the configuration + happen, including downloading and compiling OpenSSH, generating the + configuration files for the SSH server, and so on.
+ + +Reliable upgrades
+ +Another advantage of purely functional package management is that + nixos-rebuild switch will always produce the same result, + regardless of what packages or configuration files you already had on + your system. Thus, upgrading a system is as reliable as reinstalling + from scratch.
+ + +Atomic upgrades
+ +NixOS has a transactional approach to configuration + management: configuration changes such as upgrades are + atomic. This means that if the upgrade to a new + configuration is interrupted — say, the power fails half-way through — + the system will still be in a consistent state: it will either boot in + the old or the new configuration. In most other systems, you’ll end + up in an inconsistent state, and your machine may not even boot + anymore.
+ + +Rollbacks
+ +Because the files of a new configuration don’t overwrite old ones, + you can (atomically) roll back to a previous configuration. For + instance, if after a nixos-rebuild switch you discover that + you don’t like the new configuration, you can just go back:
+ +$ nixos-rebuild switch --rollback ++ +
+
+ In fact, all old system configurations automatically show up in the + Grub boot menu. So if the new configuration crashes or doesn’t boot + properly, you can just roll back by selecting an older configuration + in the Grub boot + menu. Rollbacks are very fast: it doesn’t involve lots of files + having to be restored from copies.
+ + +Reproducible system configurations
+ +NixOS’ declarative configuration model makes it easy to reproduce a + system configuration on another machine (for instance, to test a + change in a test environment before doing it on the production + server). You just copy the configuration.nix file to the + target NixOS machine and run nixos-rebuild switch. This will + give you the same configuration (kernel, applications, system + services, and so on) except for ‘mutable state’ (such as the stuff + that lives in /var).
+ + +Safe to test changes
+ +NixOS makes it safe to test potentially dangerous changes to the + system, because you can always roll back. (Unless you screw up the + boot loader, that is…) For instance, whether the change is as simple + as enabling a system service, or as large as rebuilding the entire + system with a new version of Glibc, you can test it by doing:
+ +$ nixos-rebuild test ++ +
This builds and activates the new configuration, but doesn’t make + it the boot default. Thus, rebooting the system will take you back to + the previous, known-good configuration.
+ +An even nicer way to test changes is the following:
+ +$ nixos-rebuild build-vm +$ ./result/bin/run-*-vm ++ +
This builds and starts a virtual machine that contains the new + system configuration (i.e. a clone of the configuration of the host + machine, with any changes that you made to + configuration.nix). The VM doesn’t share any data with the + host, so you can safely experiment inside the VM. The + build-vm command is very efficient (it doesn’t require a disk + image for the VM to be created), so it’s a very effective way to test + changes.
+ + +Source-based model, with binaries
+ +The Nix build language used by NixOS specifies how to build + packages from source. This makes it easy to adapt the system — just + edit any of the ‘Nix expressions’ for NixOS or Nixpkgs in + /etc/nixos, and run nixos-rebuild. However, + building from source is also slow. Therefore Nix automatically + downloads pre-built binaries from nixos.org if they are + available. This gives the flexibility of a source-based package + management model with the efficiency of a binary model.
+ + +Consistency
+ +The Nix package manager ensures that the running system is + ‘consistent’ with the logical specification of the system, meaning + that it will rebuild all packages that need to be rebuilt. For + instance, if you change the kernel, Nix will ensure that external + kernel modules such as the NVIDIA driver will be rebuilt as well — so + you never run into an X server that mysteriously fails to start after + a kernel security upgrade. And if you update the OpenSSL library, Nix + ensures that all packages in the system use the new version, even + packages that statically link against OpenSSL.
+ + +Multi-user package management
+ +On NixOS, you do not need to be root to install software. In + addition to the system-wide ‘profile’ (set of installed packages), all + user have their own profile in which they can install packages. Nix + allows multiple versions of a package to coexist, so different users + can have different versions of the same package installed in their + respective profiles. If two users install the same version of a + package, only one copy will be built or downloaded, and Nix’s security + model ensures that this is secure. Users cannot install + setuid binaries.
+ + +How does NixOS work?
+ +NixOS is based on Nix, a purely functional + package management system. Nix stores all packages in isolation from + each other under paths such as
+ +/nix/store/5rnfzla9kcx4mj5zdc7nlnv8na1najvg-firefox-3.5.4/ ++ +
The string 5rnf... is a cryptographic hash of all input + used to build the package. Packages are never overwritten after they + have been built; instead, if you change the build description of a + package (its ‘Nix expression’), it’s rebuilt and installed in a + different path in /nix/store so it doesn’t interfere with the + old version. NixOS extends this by using Nix not only to build + packages, but also things like configuration files. For instance, the + configuration of the SSH daemon is also built from a Nix expression + and stored under a path like
+ +/nix/store/s2sjbl85xnrc18rl4fhn56irkxqxyk4p-sshd_config ++ +
By building entire system configurations from a Nix expression, + NixOS ensures that such configurations don’t overwrite each other, can + be rolled back, and so on.
+ +A big implication of the way that Nix/NixOS stores packages is that + there is no /bin, /sbin, /lib, + /usr, and so on. Instead all packages are kept in + /nix/store. (The only exception is a symlink + /bin/sh to Bash in the Nix store.) Not using ‘global’ + directories such as /bin is what allows multiple versions of + a package to coexist. Nix does have a /etc to keep + system-wide configuration files, but most files in that directory are + symlinks to generated files in /nix/store.
+ +Status
+ +NixOS is available for download. Since + NixOS is a relatively young Linux distribution, you may find that + certain things that you need are missing (e.g., certain packages or + support for specific hardware), so you may need to add those yourself. + Here are some highlights of what NixOS currently provides:
+ +-
+
+
- NixOS provides a complete X11/Plasma 5 desktop environment. Other + window managers and part of Gnome are also available. + +
- NixOS uses systemd to + manage system services. It supports quite a few services + (e.g., Apache HTTPD, PostgreSQL, and Tomcat) that can be configured + declaratively through configuration.nix. + +
- NixOS build on the Nix Packages + collection (Nixpkgs), which provides Nix expressions for over + 40 000 packages that you can install under NixOS. + +
- NixOS has automatic hardware detection: the boot process loads + kernel modules for all known devices automatically. It also has + CUPS for printing, support for various wireless cards, and so on. + +
- NixOS currently runs on 32-bit and 64-bit x86 machines + (i686-linux and x86_64-linux), and experimentally + on ARM. + +
License
+ +NixOS is free software, released under a permissive + MIT/X11 license.
+ +Governance
diff --git a/index.tt b/index.tt index 99399d836e..ffbde25b65 100644 --- a/index.tt +++ b/index.tt @@ -1,4 +1,4 @@ -[% WRAPPER layout.tt title="NixOS Linux" hideTitle=1 menu='nixos' %] +[% WRAPPER layout.tt title="NixOS Linux" %] [% USE JSON.Escape %] [% USE IO.All %] [% USE HTML %] @@ -6,152 +6,249 @@ -
- [%# Title for the site, used to keep the document tree rooted at h1. %]
-
-
-
- -
NixOS
- -
-
-
- What is Nix?
- -- Nix is a powerful package manager for Linux and other Unix systems - that makes package management reliable and reproducible. It - provides atomic upgrades and rollbacks, side-by-side installation - of multiple versions of a package, multi-user package management - and easy setup of build environments. -
- - -
-
- What is NixOS?
- -NixOS is a Linux distribution with a unique approach - to package and configuration management. Built on top of the - Nix package manager, it is completely declarative, makes - upgrading systems reliable, and has - many other advantages.
- - -- -
More about NixOS
- -
-
-
-
-
+
+
[% IF anchors %]
[% END %]
-
-
- Nixpkgs
-- The Nix Packages collection (Nixpkgs) is the ever growing - packages collection for the Nix package manager, released - under a permissive MIT/X11 license. -
- - More about Nixpkgs - - -
-
- NixOps
-- NixOps is a tool for deploying sets of NixOS Linux machines, - bare-metal or to the cloud. It extends NixOS’s declarative - approach to system configuration management to networks and - provisioning. -
- - More about NixOps - - -
-
+About the community
-- Sometimes, it helps to talk with someone. Our community - is there whether you want to help or get support. -
--
-
- - - Get in touch - - - -
- - - Learning resources - - - -
+
+
+
+ Reproducible builds and deployments.
++ Nix is a powerful package manager for Linux and other + Unix systems that makes package management reliable and reproducible. + Share your development and build environments across different machines. +
++ NixOS is a Linux distribution with a unique approach to + package and configuration management. Built on top of the Nix package + manager, it is completely declarative, makes upgrading systems reliable, + and has many other advantages. +
+ Download + Get started +
+
-
-
-
-
- [% INSERT "latest-news.xhtml" %]
-
+
+ +
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+if(typeof Math.imul == "undefined" || (Math.imul(0xffffffff,5) == 0)) {
+ Math.imul = function (a, b) {
+ var ah = (a >>> 16) & 0xffff;
+ var al = a & 0xffff;
+ var bh = (b >>> 16) & 0xffff;
+ var bl = b & 0xffff;
+ // the shift by 0 fixes the sign on the high part
+ // the final |0 converts the unsigned value into a signed value
+ return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0)|0);
+ }
+}
+
+/**
+ * React v15.5.4
+ *
+ * Copyright 2013-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ */
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+ }
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+ var first = string.charCodeAt(index);
+ var second;
+ if ( // check if it’s the start of a surrogate pair
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+ // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+ return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
+ }
+ }
+ return first;
+ };
+ if (Object.defineProperty) {
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+ });
+ } else {
+ String.prototype.codePointAt = codePointAt;
+ }
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+oy.prototype.qb=function(a,b){var c=null!=b&&(b.m&64||q===b.G)?P(U,b):b,d=D.c(c,oi);t(d)&&(ap(bp),d.B?d.B():d.call(null));return c};ry.prototype.sb=q;ry.prototype.qb=function(a,b){return K.l(b,Uj,Zk.h(this))};function RA(){return ig.l(function(a,b){return new R(null,2,5,T,[a,new gy(b,null,null,null)],null)},rg(function(a){return a+.5},.5),og(new R(null,2,5,T,[!1,!0],null)))}function SA(a){var b=Dy(RA());return K.l(K.l(a,ml,!0),Ol,b)}
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+py.prototype.qb=function(a,b){var c=K.l(b,V,V.h(this));c=null!=c&&(c.m&64||q===c.G)?P(U,c):c;var d=D.c(c,Ol);return t(d)?SA(TA(c)):c};py.prototype.Fe=q;py.prototype.de=function(a,b){return UA(b)};function VA(a){return t(a)?(a=ig.c(parseFloat,Fo(""+v.h(a),/:/)),a=ig.l(Ye,cf(a),rg(function(){return function(a){return 60*a}}(a),1)),P(Xe,a)):null}
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[% title %]
-
-
-
-
-
-
+
-
-
-
-
-
-
-
- 
-
- News
-
- [% INSERT "latest-news.xhtml" %]
-
+
+
- Reproducible
++ Nix builds packages in isolation from each other. This ensures that they + are reproducible and don't have undeclared dependencies, so if a + package works on one machine, it will also work on another. +
-
-
-
-
- Twitter
+
+
+
-
-
-
- Blog Posts
-
- -
- [% FOREACH b IN JSON.Escape.json_decode(IO.All.new('blogs.json').all).channel.item.first(5); IF b; %]
-
-
- - [% - USE title = String(HTML.escape(b.title.remove('^[^:]*:').trim)); - title = title.replace('^[a-z]', title.copy.truncate(1).upper) - author = b.title.split(':').0.trim; - %] - [% - %] - - --
- [% END; END %]
-
-
+
+ Declarative
++ Nix makes it trivial to share development and build + environments for your projects, regardless of what programming + languages and tools you’re using. +
+
+
+Reliable
- Tweets by @nixos_org - + Nix’s ensures that installing or upgrading one package cannot + break other packages. It allows you to roll back to + previous versions, and ensures that no package is in an + inconsistent state during an upgrade.
++ +
+
+
+
+
+Choose from Thousands of Packages
++ The Nix Packages collection (nixpkgs) is a set of + over 60 000 packages for the Nix package manager. +
++ +
Examples...
+ +
+
+
+
+
+
[% END %]
diff --git a/js/asciinema-player.js b/js/asciinema-player.js
new file mode 100644
index 0000000000..5ad47e08b9
--- /dev/null
+++ b/js/asciinema-player.js
@@ -0,0 +1,1213 @@
+/**
+ * asciinema-player v2.6.1
+ *
+ * Copyright 2011-2018, Marcin Kulik
+ *
+ */
+
+// CustomEvent polyfill from MDN (https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent)
+
+(function () {
+ if (typeof window.CustomEvent === "function") return false;
+
+ function CustomEvent ( event, params ) {
+ params = params || { bubbles: false, cancelable: false, detail: undefined };
+ var evt = document.createEvent( 'CustomEvent');
+ evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail);
+ return evt;
+ }
+
+ CustomEvent.prototype = window.Event.prototype;
+
+ window.CustomEvent = CustomEvent;
+})();
+
+/**
+ * @license
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+// @version 0.7.22
+"undefined"==typeof WeakMap&&!function(){var e=Object.defineProperty,t=Date.now()%1e9,n=function(){this.name="__st"+(1e9*Math.random()>>>0)+(t++ +"__")};n.prototype={set:function(t,n){var o=t[this.name];return o&&o[0]===t?o[1]=n:e(t,this.name,{value:[t,n],writable:!0}),this},get:function(e){var t;return(t=e[this.name])&&t[0]===e?t[1]:void 0},"delete":function(e){var t=e[this.name];return t&&t[0]===e?(t[0]=t[1]=void 0,!0):!1},has:function(e){var t=e[this.name];return t?t[0]===e:!1}},window.WeakMap=n}(),function(e){function t(e){E.push(e),b||(b=!0,w(o))}function n(e){return window.ShadowDOMPolyfill&&window.ShadowDOMPolyfill.wrapIfNeeded(e)||e}function o(){b=!1;var e=E;E=[],e.sort(function(e,t){return e.uid_-t.uid_});var t=!1;e.forEach(function(e){var n=e.takeRecords();r(e),n.length&&(e.callback_(n,e),t=!0)}),t&&o()}function r(e){e.nodes_.forEach(function(t){var n=v.get(t);n&&n.forEach(function(t){t.observer===e&&t.removeTransientObservers()})})}function i(e,t){for(var n=e;n;n=n.parentNode){var o=v.get(n);if(o)for(var r=0;r
+
+
+
+
+ Try new tools without fear
+Don't clutter your system with tools that you use only now and then.
++python --version +python: command not found +nix-shell -p python3 +(nix-shell)python --version +Python 3.7.7+
Multiple languages, one tool
+ ++nix-shell -p python3 nodejs go rustc +(nix-shell)node --version +v10.20.1 +(nix-shell)go version +go version go1.14.1 linux/amd64 +(nix-shell)rustc --version +rustc 1.42.0+ +
+
+
+ Isolated development environments
+
+ After you get familiar with nix-shell -p you can take
+ the next step and learn some
+ Nix. To setup a more persistent environment you can also write a
+ simple shell.nix file:
+
+{ pkgs ? import <nixpkgs> {}
+}:
+pkgs.mkShell {
+ name = "dev-shell";
+ buildInputs = [
+ pkgs.python3
+ pkgs.python3Packages.virtualenv
+ pkgs.nodejs
+ pkgs.yarn
+ ];
+}
+ Then enter development environment with:
++nix-shell +(nix-shell)virtualenv --version +16.7.9 +(nix-shell)yarn --version +1.22.4+
+ Commit the above shell.nix file and let you coworkers have
+ easier time setting their development environment.
+
+
+
+
+ Minimal docker image
+
+ Using Dockefile you are responsible to:
+
-
+
- clean up everything that is not needed at runtime +
- decide how to split into layers for better caching +
+ Writing Dockefile that would produce a minimal image is
+ at best a very error prone process.
+
+ With Nix you only include to docker image packages that you define. + No cleaning up needed. There are no build tools left in your docker + image, making it as minimal as you need. +
++ Nix also know how to layer your resulting docker image, automatically + without you needed to do anything. The resulting layers are optimized + for caching as much as possible. +
+
+ The following Nix expression (default.nix) defines a
+ docker image with only hello package
+ in it.
+
+{ pkgs ? import <nixpkgs> {}
+}:
+pkgs.dockerTools.buildLayeredImage {
+ name = "only-hello";
+ contents = [ pkgs.hello ];
+}
+ To build and run the image you need to:
++nix-build default.nix -o ./result +... +/nix/store/…-docker-image-only-hello.tar.gz +docker load -i ./result +1c31fbac2eb1: Loading layer [==================>] 1.649MB/1.649MB +03b22f688054: Loading layer [==================>] 256kB/256kB +29c350a9c392: Loading layer [==================>] 31.61MB/31.61MB +6a87e4d71e07: Loading layer [==================>] 266.2kB/266.2kB +c09c43a6b910: Loading layer [==================>] 71.68kB/71.68kB +Loaded image: only-hello:qn5x1pnk7d467jsl81jng7168qsks42l +docker run only-hello:qn5x1pnk7d467jsl81jng7168qsks42l hello" +Hello, world+
+ Learn more how + to build docker images. +
+ +
+
+
+ Declarative cloud images
+How hard would it be to build and configure a Amazon EC2 image?
+
+ With the following amazon.nix we defined nginx which is
+ serving example /var/www folder, having a valid ssl
+ certificate (via LetsEncrypt) and enabled recommended security
+ settings.
+
+{ pkgs, ...}:
+{
+ security.acme.acceptTerms = true;
+ security.acme.email = "nix@example.com";
+ services.nginx = {
+ enable = true;
+ recommendedGzipSettings = true;
+ recommendedOptimisation = true;
+ recommendedProxySettings = true;
+ recommendedTlsSettings = true;
+ virtualHosts."example.com" = {
+ enableACME = true;
+ forceSSL = true;
+ locations."/".root = "/var/www";
+ };
+ };
+}
+ Now we just need to build it.
++nix-build '<nixpkgs/nixos/release.nix>' \ + -A amazonImage.x86_64-linux \ + --arg configuration ./amazon.nix \ + -o ./result +... +ls ./result/ +nixos-amazon-image-20.09pre130979.gfedcba-x86_64-linux.vhd +nix-support+
+ The resulting Virtual Hard Disk image can be then be + + imported to Amazon EC2 as usual. +
+","
"],area:[1,""],col:[2,"
- [% IF menu == 'nix' %]
- Nix
- [% ELSIF menu == 'nixpkgs' %]
- Nixpkgs
- [% ELSE %]
- NixOS
- [% END %]
-
- [% IF !hideTitle %]
-
-
- [% END %]
-
[% content %]
-