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docs: explain what jdk really points to and why

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This commit is contained in:
Florian Klink 2018-08-17 16:34:42 +02:00
parent 20aba7ae88
commit 43905b1e0c
1 changed files with 8 additions and 4 deletions
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12
doc/languages-frameworks/java.xml
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@ -15,13 +15,17 @@ stdenv.mkDerivation {
buildPhase = "ant";
}
</programlisting>
Note that <varname>jdk</varname> is an alias for the OpenJDK.
</para>
Note that <varname>jdk</varname> is an alias for the OpenJDK (self-built
where available, or pre-built via Zulu).
Platforms with OpenJDK not (yet) in Nixpkgs (<literal>Aarch32</literal>,
<literal>Aarch64</literal>) point to the (unfree)
<literal>oraclejdk</literal>.
</para>
<para>
JAR files that are intended to be used by other packages should be installed
in <filename>$out/share/java</filename>. The OpenJDK has a stdenv setup hook
that adds any JARs in the <filename>share/java</filename> directories of the
in <filename>$out/share/java</filename>. JDKs have a stdenv setup hook
that add any JARs in the <filename>share/java</filename> directories of the
build inputs to the <envar>CLASSPATH</envar> environment variable. For
instance, if the package <literal>libfoo</literal> installs a JAR named
<filename>foo.jar</filename> in its <filename>share/java</filename>