Reflect recent nix build changes in documentation links.

Author: jbgi

README.rst

@@ -44,22 +44,22 @@ How to build
 
 Documentation for building the node can be found `here <https://docs.cardano.org/getting-started/installing-the-cardano-node>`_.
 
-Linux Executable
-==================
+Executables
+===========
 
 You can download the latest version of ``cardano-node`` and ``cardano-cli``:
 
-* `linux <https://hydra.iohk.io/job/Cardano/cardano-node/cardano-node-linux/latest-finished>`_
-* `win64 <https://hydra.iohk.io/job/Cardano/cardano-node/cardano-node-win64/latest-finished>`_
-* `macos <https://hydra.iohk.io/job/Cardano/cardano-node/cardano-node-macos/latest-finished>`_
+* `linux <https://hydra.iohk.io/job/Cardano/cardano-node/linux.musl.cardano-node-linux/latest-finished>`_
+* `win64 <https://hydra.iohk.io/job/Cardano/cardano-node/linux.windows.cardano-node-win64/latest-finished>`_
+* `macos <https://hydra.iohk.io/job/Cardano/cardano-node/macos.cardano-node-macos/latest-finished>`_
 
 Windows Executable
 ==================
 
 Download
 --------
 
-You can download `here <https://hydra.iohk.io/job/Cardano/cardano-node/cardano-node-win64/latest-finished>`_.
+You can download `here <https://hydra.iohk.io/job/Cardano/cardano-node/linux.windows.cardano-node-win64/latest-finished>`_.
 
 Instructions
 ------------
@@ -459,7 +459,7 @@ You can validate Byron era blocks, delegation certificates, txs and update propo
 ``cabal exec cardano-cli -- validate-cbor --byron-block 21600 --filepath CBOREncodedByronBlockFile``
 
 
-Native Tokens 
+Native Tokens
 =======================================
 
 Native tokens is a new feature that enables the transacting of multi-assets on Cardano. Native tokens are now supported on mainnet and users can transact with ada, and an unlimited number of user-defined (custom) tokens natively.

doc/getting-started/building-the-node-using-nix.md

@@ -9,6 +9,15 @@ chmod +x install-nix.sh
 ```
 and following the directions.
 
+Then the [Flake][flake] feature of nix (and IFD support) should be enabled:
+```
+sudo mkdir -p /etc/nix
+cat <<EOF | sudo tee /etc/nix/nix.conf
+experimental-features = nix-command flakes
+allow-import-from-derivation = true
+EOF
+```
+
 #### IOHK Binary Cache
 
 To improve build speed, it is possible to set up a binary cache maintained by IOHK (**this is
@@ -21,6 +30,8 @@ trusted-public-keys = iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti+NEO2/nhblbov/8MW7R
 EOF
 ```
 
+### Building and running with nix
+
 Once Nix is installed, log out and then log back in then:
 ```
 git clone https://github.com/input-output-hk/cardano-node
@@ -43,4 +54,16 @@ Or run directly, eg.:
 nix run .#cardano-cli -- version
 ```
 
+### Developpment environments
+
+A shell environment with pre-compiled, cached, cabal dependencies is available with:
+```
+nix develop
+```
+An environment with dependencies compiled with profiling enabled is available with:
+```
+nix develop .#profiled
+```
+
 [nix]: https://nixos.org/nix/
+[flake]: https://nixos.wiki/wiki/Flakes

nix/docker/README.md

@@ -1,7 +1,7 @@
 
 ## Build Cardano Node + Image
 
-https://docs.cardano.org/projects/cardano-node/en/latest/getting-started/building-the-node-using-nix.html
+https://github.com/input-output-hk/cardano-node/blob/master/doc/getting-started/building-the-node-using-nix.md/
 
 ```
 # Build + Install the cardano node