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author | Rodney Lorrimar <dev@rodney.id.au> | 2016-03-26 16:50:45 +0000 |
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committer | Rodney Lorrimar <dev@rodney.id.au> | 2016-03-28 08:25:45 +0100 |
commit | 123da5c1c181e3a7b8136d932ec7d27fa7435ece (patch) | |
tree | 311cd4d5c7720a7e6d27cb5713ddfef0b1d55ac8 /doc | |
parent | b22e94c2008bca19b62d86d9e7264ea478daf91c (diff) | |
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nixpkgs manual: Add documentation for bower2nix
Fixes #9459 Fixes #13214
Diffstat (limited to 'doc')
-rw-r--r-- | doc/languages-frameworks/bower.xml | 244 | ||||
-rw-r--r-- | doc/languages-frameworks/index.xml | 18 |
2 files changed, 262 insertions, 0 deletions
diff --git a/doc/languages-frameworks/bower.xml b/doc/languages-frameworks/bower.xml new file mode 100644 index 000000000000..742d3c2e9fe5 --- /dev/null +++ b/doc/languages-frameworks/bower.xml @@ -0,0 +1,244 @@ +<section xmlns="http://docbook.org/ns/docbook" + xmlns:xlink="http://www.w3.org/1999/xlink" + xml:id="sec-bower"> + +<title>Bower</title> + +<para> + <link xlink:href="http://bower.io">Bower</link> is a package manager + for web site front-end components. Bower packages (comprising of + build artefacts and sometimes sources) are stored in + <command>git</command> repositories, typically on Github. The + package registry is run by the Bower team with package metadata + coming from the <filename>bower.json</filename> file within each + package. +</para> + +<para> + The end result of running Bower is a + <filename>bower_components</filename> directory which can be included + in the web app's build process. +</para> + +<para> + Bower can be run interactively, by installing + <varname>nodePackages.bower</varname>. More interestingly, the Bower + components can be declared in a Nix derivation, with the help of + <varname>nodePackages.bower2nix</varname>. +</para> + +<section xml:id="ssec-bower2nix-usage"> + <title><command>bower2nix</command> usage</title> + +<para> + Suppose you have a <filename>bower.json</filename> with the following contents: + + +<example xml:id="ex-bowerJson"><title><filename>bower.json</filename></title> +<programlisting language="json"> +<![CDATA[{ + "name": "my-web-app", + "dependencies": { + "angular": "~1.5.0", + "bootstrap": "~3.3.6" + } +}]]> +</programlisting> +</example> +</para> + + +<para> + Running <command>bower2nix</command> will produce something like the + following output: + +<programlisting language="nix"> +<![CDATA[{ fetchbower, buildEnv }: +buildEnv { name = "bower-env"; ignoreCollisions = true; paths = [ + (fetchbower "angular" "1.5.3" "~1.5.0" "1749xb0firxdra4rzadm4q9x90v6pzkbd7xmcyjk6qfza09ykk9y") + (fetchbower "bootstrap" "3.3.6" "~3.3.6" "1vvqlpbfcy0k5pncfjaiskj3y6scwifxygfqnw393sjfxiviwmbv") + (fetchbower "jquery" "2.2.2" "1.9.1 - 2" "10sp5h98sqwk90y4k6hbdviwqzvzwqf47r3r51pakch5ii2y7js1") +]; }]]> +</programlisting> +</para> + + +<para> + Using the <command>bower2nix</command> command line arguments, the + output can be redirected to a file. A name like + <filename>bower-packages.nix</filename> would be fine. +</para> + +<para> + The resulting derivation is a union of all the downloaded Bower + packages (and their dependencies). To use it, they still need to be + linked together by Bower, which is where + <varname>buildBowerComponents</varname> is useful. +</para> +</section> + +<section xml:id="ssec-build-bower-components"><title><varname>buildBowerComponents</varname> function</title> + + <para> + The function is implemented in <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/bower-modules/generic/default.nix"> + <filename>pkgs/development/bower-modules/generic/default.nix</filename></link>. + Example usage: + +<example xml:id="ex-buildBowerComponents"><title>buildBowerComponents</title> +<programlisting language="nix"> +bowerComponents = buildBowerComponents { + name = "my-web-app"; + generated = ./bower-packages.nix; <co xml:id="ex-buildBowerComponents-1" /> + src = myWebApp; <co xml:id="ex-buildBowerComponents-2" /> +}; +</programlisting> +</example> + </para> + +<para> +In <xref linkend="ex-buildBowerComponents" />, the following arguments +are of special significance to the function: + +<calloutlist> + <callout arearefs="ex-buildBowerComponents-1"> + <para> + <varname>generated</varname> specifies the file which was created by <command>bower2nix</command>. + </para> + </callout> + + <callout arearefs="ex-buildBowerComponents-2"> + <para> + <varname>src</varname> is your project's sources. It needs to + contain a <filename>bower.json</filename> file. + </para> + </callout> +</calloutlist> +</para> + +<para> + <varname>buildBowerComponents</varname> will run Bower to link + together the output of <command>bower2nix</command>, resulting in a + <filename>bower_components</filename> directory which can be used. +</para> + +<para> + Here is an example of a web frontend build process using + <command>gulp</command>. You might use <command>grunt</command>, or + anything else. +</para> + +<example xml:id="ex-bowerGulpFile"><title>Example build script (<filename>gulpfile.js</filename>)</title> +<programlisting language="javascript"> +<![CDATA[var gulp = require('gulp'); + +gulp.task('default', [], function () { + gulp.start('build'); +}); + +gulp.task('build', [], function () { + console.log("Just a dummy gulp build"); + gulp + .src(["./bower_components/**/*"]) + .pipe(gulp.dest("./gulpdist/")); +});]]> +</programlisting> +</example> + +<example xml:id="ex-buildBowerComponentsDefaultNix"> + <title>Full example — <filename>default.nix</filename></title> +<programlisting language="nix"> +{ myWebApp ? { outPath = ./.; name = "myWebApp"; } +, pkgs ? import <nixpkgs> {} +}: + +pkgs.stdenv.mkDerivation { + name = "my-web-app-frontend"; + src = myWebApp; + + buildInputs = [ pkgs.nodePackages.gulp ]; + + bowerComponents = pkgs.buildBowerComponents { <co xml:id="ex-buildBowerComponentsDefault-1" /> + name = "my-web-app"; + generated = ./bower-packages.nix; + src = myWebApp; + }; + + buildPhase = '' + cp --reflink=auto --no-preserve=mode -R $bowerComponents/bower_components . <co xml:id="ex-buildBowerComponentsDefault-2" /> + export HOME=$PWD <co xml:id="ex-buildBowerComponentsDefault-3" /> + ${pkgs.nodePackages.gulp}/bin/gulp build <co xml:id="ex-buildBowerComponentsDefault-4" /> + ''; + + installPhase = "mv gulpdist $out"; +} +</programlisting> +</example> + +<para> +A few notes about <xref linkend="ex-buildBowerComponentsDefaultNix" />: + +<calloutlist> + <callout arearefs="ex-buildBowerComponentsDefault-1"> + <para> + The result of <varname>buildBowerComponents</varname> is an + input to the frontend build. + </para> + </callout> + + <callout arearefs="ex-buildBowerComponentsDefault-2"> + <para> + Whether to symlink or copy the + <filename>bower_components</filename> directory depends on the + build tool in use. In this case a copy is used to avoid + <command>gulp</command> silliness with permissions. + </para> + </callout> + + <callout arearefs="ex-buildBowerComponentsDefault-3"> + <para> + <command>gulp</command> requires <varname>HOME</varname> to + refer to a writeable directory. + </para> + </callout> + + <callout arearefs="ex-buildBowerComponentsDefault-4"> + <para> + The actual build command. Other tools could be used. + </para> + </callout> +</calloutlist> +</para> +</section> + +<section xml:id="ssec-bower2nix-troubleshooting"> + <title>Troubleshooting</title> + +<variablelist> + + <varlistentry> + <term> + <literal>ENOCACHE</literal> errors from + <varname>buildBowerComponents</varname> + </term> + <listitem> + <para> + This means that Bower was looking for a package version which + doesn't exist in the generated + <filename>bower-packages.nix</filename>. + </para> + <para> + If <filename>bower.json</filename> has been updated, then run + <command>bower2nix</command> again. + </para> + <para> + It could also be a bug in <command>bower2nix</command> or + <command>fetchbower</command>. If possible, try reformulating + the version specification in <filename>bower.json</filename>. + </para> + </listitem> + </varlistentry> +</variablelist> + +</section> + +</section> diff --git a/doc/languages-frameworks/index.xml b/doc/languages-frameworks/index.xml index ab62afa40d61..63c4b7dec607 100644 --- a/doc/languages-frameworks/index.xml +++ b/doc/languages-frameworks/index.xml @@ -24,6 +24,24 @@ such as Perl or Haskell. These are described in this chapter.</para> <xi:include href="r.xml" /> <!-- generated from ../../pkgs/development/r-modules/README.md --> <xi:include href="qt.xml" /> <xi:include href="texlive.xml" /> +<xi:include href="bower.xml" /> + + +<!-- +<section><title>Haskell</title> + +<para>TODO</para> + +</section> + + +<section><title>TeX / LaTeX</title> + +<para>* Special support for building TeX documents</para> + +</section> +--> +>>>>>>> 05113a5... nixpkgs manual: Add documentation for bower2nix </chapter> |