mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-10 08:16:15 +02:00
* Get rid of nix-pack-closure / nix-unpack-closure, they're redundant.
This commit is contained in:
Eelco Dolstra
parent
3f4ed681c2
commit
fa791116a3
8 changed files with 7 additions and 298 deletions
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@ -14,7 +14,6 @@ XSLTPROC = $(xsltproc) $(xmlflags) \
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man1_MANS = nix-env.1 nix-build.1 nix-store.1 nix-instantiate.1 \
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nix-collect-garbage.1 nix-push.1 nix-pull.1 \
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nix-prefetch-url.1 nix-channel.1 \
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nix-pack-closure.1 nix-unpack-closure.1 \
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nix-install-package.1 nix-hash.1 nix-copy-closure.1
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FIGURES = figures/user-environments.png
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@ -89,10 +89,6 @@
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<title>nix-install-package</title>
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<xi:include href="nix-install-package.xml" />
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</section>
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<section xml:id="sec-nix-pack-closure">
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<title>nix-pack-closure</title>
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<xi:include href="nix-pack-closure.xml" />
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</section>
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<section xml:id="sec-nix-prefetch-url">
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<title>nix-prefetch-url</title>
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<xi:include href="nix-prefetch-url.xml" />
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@ -105,10 +101,6 @@
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<title>nix-push</title>
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<xi:include href="nix-push.xml" />
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</section>
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<section xml:id="sec-nix-unpack-closure">
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<title>nix-unpack-closure</title>
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<xi:include href="nix-unpack-closure.xml" />
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</section>
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</section>
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</appendix>
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@ -1,82 +0,0 @@
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<refentry xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refmeta>
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<refentrytitle>nix-pack-closure</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="source">Nix</refmiscinfo>
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<refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>nix-pack-closure</refname>
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<refpurpose>pack the closure of a store path into a single file that
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can be unpacked with
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<command>nix-unpack-closure</command></refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nix-pack-closure</command>
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<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsection><title>Description</title>
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<para>The command <command>nix-pack-closure</command> packs the
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contents of the store paths <replaceable>paths</replaceable> and
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<emphasis>all their dependencies</emphasis> into a single file, which
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is written to standard output. (That is, it
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<emphasis>serialises</emphasis> <replaceable>paths</replaceable>.)
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The output can then be unpacked into the Nix store of another machine
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using <command>nix-unpack-closure</command>.</para>
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<para>Together, <command>nix-pack-closure</command> and
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<command>nix-unpack-closure</command> provide a quick and easy way to
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deploy a package to a different machine. However, as the output of
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<command>nix-pack-closure</command> tends to be rather large (since it
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contains all dependencies), it’s not very efficient.
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<command>nix-push</command> and <command>nix-pull</command> are more
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efficient, but are also a bit more cumbersome to use.</para>
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</refsection>
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<refsection><title>Examples</title>
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<para>To copy some instance of Subversion with all its dependencies to
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another machine:
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<screen>
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$ nix-pack-closure /nix/store/hj232g1r...-subversion-1.3.0 > svn.closure
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<lineannotation>Copy <!-- !!! <filename> -->svn.closure to the remote machine, then on the remote machine do:</lineannotation>
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$ nix-unpack-closure < svn.closure</screen>
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</para>
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<para>Copy the program <command>azureus</command> with all its
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dependencies to the machine <literal>scratchy</literal>:
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<screen>
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$ nix-pack-closure $(which azureus) | ssh scratchy nix-unpack-closure</screen>
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</para>
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<para>As a variation on the previous example, copy
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<command>azureus</command>, and also install it in the user’s profile
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on the target machine:
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<screen>
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$ nix-pack-closure $(which azureus) | ssh scratchy 'nix-env -i $(nix-unpack-closure)'</screen>
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</para>
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</refsection>
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</refentry>
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@ -1,42 +0,0 @@
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<refentry xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refmeta>
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<refentrytitle>nix-unpack-closure</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="source">Nix</refmiscinfo>
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<refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>nix-unpack-closure</refname>
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<refpurpose>unpack the closure of a store path created by <command>nix-pack-closure</command> into the Nix store</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nix-unpack-closure</command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsection><title>Description</title>
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<para>The command <command>nix-unpack-closure</command> unpacks the
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closure of a set of store paths created by
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<command>nix-pack-closure</command> into the local Nix store. The
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closure is a single file read from standard input. See the
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description of <command>nix-pack-closure</command> for details and
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examples.</para>
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<para>The top-level paths in the closure (i.e., the paths passed to
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the original <command>nix-pack-closure</command> call that created the
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closure) are printed on standard output. These paths can be passed,
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for instance, to <literal>nix-env -i</literal> to install them into a
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user environment on the target machine.</para>
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</refsection>
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</refentry>
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@ -47,6 +47,13 @@
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<listitem><para><command>nix-prefetch-url</command> now supports
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<literal>mirror://</literal> URLs.</para></listitem>
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<listitem><para>Removed the commands
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<command>nix-pack-closure</command> and
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<command>nix-unpack-closure</command>. You can do almost the same
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thing but much more efficiently by doing <literal>nix-store --export
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$(nix-store -qR <replaceable>paths</replaceable>) > closure</literal> and
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<literal>nix-store --import < closure</literal>.</para></listitem>
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</itemizedlist>
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</section>
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@ -1,7 +1,6 @@
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bin_SCRIPTS = nix-collect-garbage \
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nix-pull nix-push nix-prefetch-url \
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nix-install-package nix-channel nix-build \
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nix-pack-closure nix-unpack-closure \
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nix-copy-closure
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noinst_SCRIPTS = nix-profile.sh generate-patches.pl \
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@ -36,7 +35,6 @@ EXTRA_DIST = nix-collect-garbage.in \
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download-using-manifests.pl.in \
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copy-from-other-stores.pl.in \
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generate-patches.pl.in \
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nix-pack-closure.in nix-unpack-closure.in \
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nix-copy-closure.in \
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find-runtime-roots.pl.in \
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build-remote.pl.in \
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@ -1,75 +0,0 @@
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#! @perl@ -w
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# This tool computes the closure of a path (using "nix-store --query
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# --requisites") and puts the contents of each path in the closure in
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# a big NAR archive that can be installed on another Nix installation
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# using "nix-unpack-closure".
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# TODO: make this program "streamy", i.e., don't use a temporary
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# directory.
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use strict;
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use File::Temp qw(tempdir);
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my $binDir = $ENV{"NIX_BIN_DIR"};
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$binDir = "@bindir@" unless defined $binDir;
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my $tmpDir = tempdir("nix-pack-closure.XXXXXX", CLEANUP => 1, TMPDIR => 1)
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or die "cannot create a temporary directory";
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mkdir "$tmpDir/contents", 0755 or die;
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mkdir "$tmpDir/references", 0755 or die;
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mkdir "$tmpDir/derivers", 0755 or die;
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open TOPLEVEL, ">$tmpDir/top-level" or die;
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my %storePaths;
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while (@ARGV) {
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my $storePath = shift @ARGV;
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# $storePath might be a symlink to the store, so resolve it.
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$storePath = (`$binDir/nix-store --query --resolve '$storePath'`
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or die "cannot resolve `$storePath'");
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chomp $storePath;
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print TOPLEVEL $storePath, "\n";
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# Get the closure of this path.
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my $pid = open(READ,
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"$binDir/nix-store --query --requisites '$storePath'|") or die;
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while (<READ>) {
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chomp;
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die "bad: $_" unless /^\//;
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$storePaths{$_} = "";
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}
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close READ or die "nix-store failed: $?";
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}
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close TOPLEVEL or die;
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foreach my $storePath (sort(keys %storePaths)) {
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print STDERR "packing `$storePath'...\n";
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$storePath =~ /\/([^\/]+)$/;
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my $name = $1;
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system("$binDir/nix-store --dump '$storePath' > $tmpDir/contents/$name") == 0
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or die "nix-store --dump failed on `$storePath': $?";
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system("$binDir/nix-store --query --references '$storePath' > $tmpDir/references/$name") == 0
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or die "nix-store --query --references failed on `$storePath': $?";
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system("$binDir/nix-store --query --deriver '$storePath' > $tmpDir/derivers/$name") == 0
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or die "nix-store --query --deriver failed on `$storePath': $?";
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}
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# Write a NAR archive of everything to standard output.
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system("nix-store --dump '$tmpDir'") == 0
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or die "nix-store --dump failed";
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@ -1,88 +0,0 @@
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#! @perl@ -w
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# This tool unpacks the closures created by "nix-pack-closure" and
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# adds them to the Nix store.
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# TODO: make this program "streamy", i.e., don't use a temporary
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# directory.
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use strict;
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use File::Temp qw(tempdir);
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my $binDir = $ENV{"NIX_BIN_DIR"};
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$binDir = "@bindir@" unless defined $binDir;
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my $tmpDir = tempdir("nix-unpack-closure.XXXXXX", CLEANUP => 1, TMPDIR => 1)
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or die "cannot create a temporary directory";
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# Unpack the NAR archive on standard input.
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system("nix-store --restore '$tmpDir/unpacked'") == 0
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or die "nix-store --restore failed";
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open VALID, ">$tmpDir/validity" or die;
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# For each path in the closure that is not yet valid, add it to the
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# store. TODO: use proper locking. Or even better, let nix-store do
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# this.
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opendir(DIR, "$tmpDir/unpacked/contents") or die "cannot open directory: $!";
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foreach my $name (sort(readdir DIR)) {
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next if $name eq "." or $name eq "..";
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my $storePath = "@storedir@/$name"; # !!!
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# !!! this really isn't a good validity check!
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system "$binDir/nix-store --check-validity '$storePath' 2> /dev/null";
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if ($? != 0) {
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print STDERR "unpacking `$storePath'...\n";
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# !!! race
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system("@coreutils@/rm -rf '$storePath'") == 0
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or die "cannot remove `$storePath': $?";
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system("$binDir/nix-store --restore '$storePath' < '$tmpDir/unpacked/contents/$name'") == 0
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or die "nix-store --dump failed on `$storePath': $?";
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print VALID "$storePath\n";
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open DRV, "<$tmpDir/unpacked/derivers/$name" or die;
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my $deriver = <DRV>;
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chomp $deriver;
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$deriver = "" if $deriver eq "unknown-deriver";
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close DRV;
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my @refs;
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open REFS, "<$tmpDir/unpacked/references/$name" or die;
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while (<REFS>) {
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chomp;
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push @refs, $_;
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}
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close REFS;
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print VALID "$deriver\n";
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print VALID (scalar @refs), "\n";
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foreach my $ref (@refs) {
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print VALID "$ref\n";
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}
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}
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}
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closedir(DIR) or die;
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# Register the invalid paths as valid.
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system("nix-store --register-validity <'$tmpDir/validity'") == 0
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or die "nix-store --register-validity failed";
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# Show the top-level paths so that something useful can be done with
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# them, e.g., passing them to `nix-env -i'.
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if (-e "$tmpDir/unpacked/top-level") {
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open TOPLEVEL, "<$tmpDir/unpacked/top-level" or die;
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while (<TOPLEVEL>) { print "$_"; }
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close TOPLEVEL;
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}
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