doc: Add a "Boostrapping" section.

* doc/guix.texi (Package Modules): New node, with material formerly
  under "GNU Distribution".
  (Bootstrapping): New node.
* Makefile.am (EXTRA_DIST): Add doc/images/bootstrap-graph.dot and
  doc/images/bootstrap-graph.eps.
  (infoimagedir, dist_infoimage_DATA, DOT_OPTIONS): New variable.
  (.dot.png, .dot.eps, doc/guix.pdf, doc/guix.info, doc/guix.ps): New
  targets.
* doc/images/bootstrap-graph.dot: New file.

1 files changed, 83 insertions, 0 deletions

diff --git a/doc/images/bootstrap-graph.dot b/doc/images/bootstrap-graph.dot
new file mode 100644
index 0000000000..06d7f29c7a
--- /dev/null
+++ b/doc/images/bootstrap-graph.dot
@@ -0,0 +1,83 @@
+# Obtained by running "nix-store --graph" on the first GCC derivation.
+
+digraph G {
+"/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [label = "gcc-bootstrap-0.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/3iawic1z95112yfz5y9xdp66qbxxr8l1-tar" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "black"];
+"/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "red"];
+"/nix/store/8cc81w6m04csm52y247xj3gydrbz2niv-xz" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "green"];
+"/nix/store/96yx6013dhggr3mpg5ayxv8dm9mv2ghv-module-import.drv" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "blue"];
+"/nix/store/fl9cwcczfdv73vq5sr0c4rd5hqzrgvac-gcc-4.7.2.tar.xz.drv" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "magenta"];
+"/nix/store/jaaqdl979wjirnbxz1jqsipg22nva5n4-bash" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "burlywood"];
+"/nix/store/r3dsy5j2c16sv26raala6kahff7w18hb-gcc-bootstrap-0-guile-builder" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "black"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "red"];
+"/nix/store/y4n7rzysx6qz3p0n91dw9qz5w93l6iqv-module-import-compiled.drv" -> "/nix/store/x60397za40lx0n88f51a2csfdq5xvb19-gcc-bootstrap-0.drv" [color = "green"];
+"/nix/store/3iawic1z95112yfz5y9xdp66qbxxr8l1-tar" [label = "tar", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [label = "glibc-bootstrap-0.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/3iawic1z95112yfz5y9xdp66qbxxr8l1-tar" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "blue"];
+"/nix/store/8cc81w6m04csm52y247xj3gydrbz2niv-xz" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "magenta"];
+"/nix/store/8iivk9hpnps21yrbq3zzsxgzv9ixbhgh-glibc-bootstrap-0-guile-builder" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "burlywood"];
+"/nix/store/96yx6013dhggr3mpg5ayxv8dm9mv2ghv-module-import.drv" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "black"];
+"/nix/store/wdwrkg02gn28bkpbxgdb2nv558v8s3ji-glibc-2.17.tar.xz.drv" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "red"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "green"];
+"/nix/store/y4n7rzysx6qz3p0n91dw9qz5w93l6iqv-module-import-compiled.drv" -> "/nix/store/4sv9xhcjap6byca130fzpzzjalb7iixv-glibc-bootstrap-0.drv" [color = "blue"];
+"/nix/store/8cc81w6m04csm52y247xj3gydrbz2niv-xz" [label = "xz", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/8iivk9hpnps21yrbq3zzsxgzv9ixbhgh-glibc-bootstrap-0-guile-builder" [label = "glibc-bootstrap-0-guile-builder", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/3iawic1z95112yfz5y9xdp66qbxxr8l1-tar" -> "/nix/store/8iivk9hpnps21yrbq3zzsxgzv9ixbhgh-glibc-bootstrap-0-guile-builder" [color = "magenta"];
+"/nix/store/8cc81w6m04csm52y247xj3gydrbz2niv-xz" -> "/nix/store/8iivk9hpnps21yrbq3zzsxgzv9ixbhgh-glibc-bootstrap-0-guile-builder" [color = "burlywood"];
+"/nix/store/96yx6013dhggr3mpg5ayxv8dm9mv2ghv-module-import.drv" [label = "module-import.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/9zrdfvnrpljryr82an2n1mj6bh2przhn-module-import-guile-builder" -> "/nix/store/96yx6013dhggr3mpg5ayxv8dm9mv2ghv-module-import.drv" [color = "black"];
+"/nix/store/mj7amprgvl2rgash1nr0v64apik8vc7f-utils.scm" -> "/nix/store/96yx6013dhggr3mpg5ayxv8dm9mv2ghv-module-import.drv" [color = "red"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/96yx6013dhggr3mpg5ayxv8dm9mv2ghv-module-import.drv" [color = "green"];
+"/nix/store/9zrdfvnrpljryr82an2n1mj6bh2przhn-module-import-guile-builder" [label = "module-import-guile-builder", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/mj7amprgvl2rgash1nr0v64apik8vc7f-utils.scm" -> "/nix/store/9zrdfvnrpljryr82an2n1mj6bh2przhn-module-import-guile-builder" [color = "blue"];
+"/nix/store/fl9cwcczfdv73vq5sr0c4rd5hqzrgvac-gcc-4.7.2.tar.xz.drv" [label = "gcc-4.7.2.tar.xz.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/6kslnirvm26fij7wpjqbw617ri4gf5x5-gcc-4.7.2.tar.xz-guile-builder" -> "/nix/store/fl9cwcczfdv73vq5sr0c4rd5hqzrgvac-gcc-4.7.2.tar.xz.drv" [color = "magenta"];
+"/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" -> "/nix/store/fl9cwcczfdv73vq5sr0c4rd5hqzrgvac-gcc-4.7.2.tar.xz.drv" [color = "burlywood"];
+"/nix/store/pzv319p3q7raiad7nq7fcdw9rafzp14k-module-import-compiled.drv" -> "/nix/store/fl9cwcczfdv73vq5sr0c4rd5hqzrgvac-gcc-4.7.2.tar.xz.drv" [color = "black"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/fl9cwcczfdv73vq5sr0c4rd5hqzrgvac-gcc-4.7.2.tar.xz.drv" [color = "red"];
+"/nix/store/6kslnirvm26fij7wpjqbw617ri4gf5x5-gcc-4.7.2.tar.xz-guile-builder" [label = "gcc-4.7.2.tar.xz-guile-builder", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/jaaqdl979wjirnbxz1jqsipg22nva5n4-bash" [label = "bash", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" [label = "module-import.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/abagrdbdndkd0y2dwk0nw1gw0g0rhl2z-ftp-client.scm" -> "/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" [color = "green"];
+"/nix/store/dwd2iwd1ban8a8rmx568dpgrbkkidfhw-download.scm" -> "/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" [color = "blue"];
+"/nix/store/mj7amprgvl2rgash1nr0v64apik8vc7f-utils.scm" -> "/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" [color = "magenta"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" [color = "burlywood"];
+"/nix/store/yfixjx2gpvsi5dhkpdx5gj6gx0xdk1c8-module-import-guile-builder" -> "/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" [color = "black"];
+"/nix/store/abagrdbdndkd0y2dwk0nw1gw0g0rhl2z-ftp-client.scm" [label = "ftp-client.scm", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/dwd2iwd1ban8a8rmx568dpgrbkkidfhw-download.scm" [label = "download.scm", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/mj7amprgvl2rgash1nr0v64apik8vc7f-utils.scm" [label = "utils.scm", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/pzv319p3q7raiad7nq7fcdw9rafzp14k-module-import-compiled.drv" [label = "module-import-compiled.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
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+"/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" -> "/nix/store/pzv319p3q7raiad7nq7fcdw9rafzp14k-module-import-compiled.drv" [color = "green"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/pzv319p3q7raiad7nq7fcdw9rafzp14k-module-import-compiled.drv" [color = "blue"];
+"/nix/store/98gzqlgpm4gxrpl5bzykpqbwrx8ckx8l-module-import-compiled-guile-builder" [label = "module-import-compiled-guile-builder", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/r3dsy5j2c16sv26raala6kahff7w18hb-gcc-bootstrap-0-guile-builder" [label = "gcc-bootstrap-0-guile-builder", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/3iawic1z95112yfz5y9xdp66qbxxr8l1-tar" -> "/nix/store/r3dsy5j2c16sv26raala6kahff7w18hb-gcc-bootstrap-0-guile-builder" [color = "magenta"];
+"/nix/store/8cc81w6m04csm52y247xj3gydrbz2niv-xz" -> "/nix/store/r3dsy5j2c16sv26raala6kahff7w18hb-gcc-bootstrap-0-guile-builder" [color = "burlywood"];
+"/nix/store/jaaqdl979wjirnbxz1jqsipg22nva5n4-bash" -> "/nix/store/r3dsy5j2c16sv26raala6kahff7w18hb-gcc-bootstrap-0-guile-builder" [color = "black"];
+"/nix/store/wdwrkg02gn28bkpbxgdb2nv558v8s3ji-glibc-2.17.tar.xz.drv" [label = "glibc-2.17.tar.xz.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/kvk5wp8c9rzvvrmq5fv5r58l78q8i6ch-module-import.drv" -> "/nix/store/wdwrkg02gn28bkpbxgdb2nv558v8s3ji-glibc-2.17.tar.xz.drv" [color = "red"];
+"/nix/store/pzv319p3q7raiad7nq7fcdw9rafzp14k-module-import-compiled.drv" -> "/nix/store/wdwrkg02gn28bkpbxgdb2nv558v8s3ji-glibc-2.17.tar.xz.drv" [color = "green"];
+"/nix/store/q7as3jddipj4g6si8lawrdbkjg0zcjvg-glibc-2.17.tar.xz-guile-builder" -> "/nix/store/wdwrkg02gn28bkpbxgdb2nv558v8s3ji-glibc-2.17.tar.xz.drv" [color = "blue"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" -> "/nix/store/wdwrkg02gn28bkpbxgdb2nv558v8s3ji-glibc-2.17.tar.xz.drv" [color = "magenta"];
+"/nix/store/q7as3jddipj4g6si8lawrdbkjg0zcjvg-glibc-2.17.tar.xz-guile-builder" [label = "glibc-2.17.tar.xz-guile-builder", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" [label = "guile-bootstrap-2.0.drv", fontname = Helvetica, shape = box, style = filled, fillcolor = "#ffffff"];
+"/nix/store/bplka3yqdg8prqq3zdxza6wxlkjdhr2g-build-bootstrap-guile.sh" -> "/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" [color = "burlywood"];
+"/nix/store/jaaqdl979wjirnbxz1jqsipg22nva5n4-bash" -> "/nix/store/x9x1a86flhx15cams7235rfy5gc5cww1-guile-bootstrap-2.0.drv" [color = "black"];
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+"/nix/store/mj7amprgvl2rgash1nr0v64apik8vc7f-utils.scm" -> "/nix/store/yfixjx2gpvsi5dhkpdx5gj6gx0xdk1c8-module-import-guile-builder" [color = "magenta"];
+}