Merge moving build docs to developer documentation

docs/Installation/install-tahoe.rst

@@ -39,7 +39,7 @@ To install Tahoe-LAFS on Windows:
 
     tahoe --version
 
-If you want to hack on Tahoe's source code, you can install Tahoe in a ``virtualenv`` on your Windows Machine. To learn more, see :doc:`install-on-windows`.
+If you want to hack on Tahoe's source code, you can install Tahoe in a ``virtualenv`` on your Windows Machine. To learn more, see :doc:`../build/build-on-windows`.
 
 Linux, BSD, or MacOS
 ====================
@@ -63,6 +63,6 @@ If you are working on MacOS or a Linux distribution which does not have Tahoe-LA
 
     tahoe --version
 
-If you are looking to hack on the source code or run pre-release code, we recommend you install Tahoe-LAFS on a `virtualenv` instance. To learn more, see :doc:`install-on-linux`.
+If you are looking to hack on the source code or run pre-release code, we recommend you install Tahoe-LAFS on a `virtualenv` instance. To learn more, see :doc:`../build/build-on-linux`.
 
 You can always write to the `tahoe-dev mailing list <https://lists.tahoe-lafs.org/mailman/listinfo/tahoe-dev>`_ or chat on the `Libera.chat IRC <irc://irc.libera.chat/%23tahoe-lafs>`_ if you are not able to get Tahoe-LAFS up and running on your deployment.

docs/index.rst

@@ -21,9 +21,6 @@ preserving your privacy and security.
    about-tahoe
 
    Installation/install-tahoe
-   Installation/install-on-windows
-   Installation/install-on-linux
-   Installation/install-on-desert-island
 
    running
    configuration
@@ -70,6 +67,9 @@ preserving your privacy and security.
 
    contributing
    CODE_OF_CONDUCT
+   build/build-on-windows
+   build/build-on-linux
+   build/build-on-desert-island
    developer-guide
    ticket-triage
    release-checklist