forked from lix-project/lix
Use $<attr>Path instead of $<attr> for passAsFile
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@ -254,11 +254,17 @@ big = "a very long string";
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</programlisting>
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then when the builder runs, the environment variable
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<envar>big</envar> will contain the absolute path to a temporary
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file containing <literal>a very long string</literal>. This is
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useful when you need to pass large strings to a builder, since
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most operating systems impose a limit on the size of the
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environment (typically, a few hundred kilobyte).</para></listitem>
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<envar>bigPath</envar> will contain the absolute path to a
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temporary file containing <literal>a very long
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string</literal>. That is, for any attribute
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<replaceable>x</replaceable> listed in
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<varname>passAsFile</varname>, Nix will pass an environment
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variable <envar><replaceable>x</replaceable>Path</envar> holding
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the path of the file containing the value of attribute
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<replaceable>x</replaceable>. This is useful when you need to pass
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large strings to a builder, since most operating systems impose a
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limit on the size of the environment (typically, a few hundred
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kilobyte).</para></listitem>
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</varlistentry>
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@ -1662,7 +1662,7 @@ void DerivationGoal::startBuilder()
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} else {
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Path p = tmpDir + "/.attr-" + int2String(fileNr++);
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writeFile(p, i.second);
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env[i.first] = p;
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env[i.first + "Path"] = p;
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}
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}
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@ -10,7 +10,7 @@ mkDerivation {
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passAsFile = [ \"foo\" ];
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foo = [ \"xyzzy\" ];
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builder = builtins.toFile \"builder.sh\" ''
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[ \"\$(cat \$foo)\" = xyzzy ]
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[ \"\$(cat \$fooPath)\" = xyzzy ]
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touch \$out
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'';
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}
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