Update dependencies and documentation

doc/nix-installation.md

@@ -89,8 +89,6 @@ For each substituter we use, we need to also configure Nix to trust their public
 
 When editing the `/etc/nix/nix.conf` as root, suffix the new substituter(s), space-separated to any values already populating the `substituters` parameter.
 
-Note, the order of the substituters indicates the order in which caches are searched. Leave the <https://cache.nixos.org> substituter first to maximize cache hits.
-
 Next, similarly suffix the key(s) to the `trusted-public-keys` parameter.
 
 Your file will likely look like the following:

doc/nix-installation.org

@@ -133,10 +133,6 @@ keys:
 When editing the =/etc/nix/nix.conf= as root, suffix the new substituter(s),
 space-separated to any values already populating the =substituters= parameter.
 
-Note, the order of the substituters indicates the order in which caches are
-searched. Leave the https://cache.nixos.org substituter first to maximize cache
-hits.
-
 Next, similarly suffix the key(s) to the =trusted-public-keys= parameter.
 
 Your file will likely look like the following:

doc/nix-usage-flakes.md

@@ -185,8 +185,6 @@ nix search .
 
     * packages.x86_64-linux.org2gfm
       Script to export Org-mode files to GitHub Flavored Markdown (GFM)
-
-    * legacyPackages.x86_64-linux.ci
 
 If a flake has a lot of packages, you can pass regexes to prune down the search. Returned values will match all the regexes provided.
 

doc/nix-usage-flakes.org

@@ -304,8 +304,6 @@ nix search . | ansifilter
 : 
 : * packages.x86_64-linux.org2gfm
 :   Script to export Org-mode files to GitHub Flavored Markdown (GFM)
-: 
-: * legacyPackages.x86_64-linux.ci
 
 If a flake has a lot of packages, you can pass regexes to prune down the search.
 Returned values will match all the regexes provided.

doc/nix-usage-noflakes.md

@@ -80,13 +80,13 @@ We can use an `--extra-experimental-features nix-command` switch to use an exper
 nix --extra-experimental-features nix-command search --file . ''
 ```
 
-    * legacyPackages.aarch64-darwin.ci
-
-    * legacyPackages.x86_64-darwin.ci
+    * packages.aarch64-darwin.nix-scaffold
+      Script to scaffold a Nix project
 
-    * legacyPackages.x86_64-linux.ci
+    * packages.aarch64-darwin.org2gfm
+      Script to export Org-mode files to GitHub Flavored Markdown (GFM)
 
-    * packages.aarch64-darwin.nix-scaffold
+    * packages.x86_64-darwin.nix-scaffold
       Script to scaffold a Nix project
 
     …
@@ -119,14 +119,14 @@ nix --extra-experimental-features \
 ```
 
     {
-      "legacyPackages.aarch64-darwin.ci": {
-        "description": "",
-        "pname": "nix-project-ci",
+      "packages.aarch64-darwin.nix-scaffold": {
+        "description": "Script to scaffold a Nix project",
+        "pname": "nix-scaffold",
         "version": ""
       },
-      "legacyPackages.x86_64-darwin.ci": {
-        "description": "",
-        "pname": "nix-project-ci",
+      "packages.aarch64-darwin.org2gfm": {
+        "description": "Script to export Org-mode files to GitHub Flavored Markdown (GFM)",
+        "pname": "org2gfm",
     …
 
 Additional data includes the package's name (from the “pname” field), a version string, and a textual description of the package.
@@ -305,6 +305,7 @@ nix-env --install --file . --attr packages.x86_64-linux.org2gfm 2>&1
 ```
 
     installing 'org2gfm'
+    building '/nix/store/hs9xz17vlb2m4qn6kxfmccgjq4jyrvqg-user-environment.drv'...
 
 We can see this installation by querying what's been installed:
 

doc/nix-usage-noflakes.org

@@ -171,13 +171,13 @@ nix --experimental-features nix-command search --file . '' | ansifilter
 
 #+RESULTS: nix-search-local
 #+begin_example
-,* legacyPackages.aarch64-darwin.ci
-
-,* legacyPackages.x86_64-darwin.ci
+,* packages.aarch64-darwin.nix-scaffold
+  Script to scaffold a Nix project
 
-,* legacyPackages.x86_64-linux.ci
+,* packages.aarch64-darwin.org2gfm
+  Script to export Org-mode files to GitHub Flavored Markdown (GFM)
 
-,* packages.aarch64-darwin.nix-scaffold
+,* packages.x86_64-darwin.nix-scaffold
   Script to scaffold a Nix project
 
 …
@@ -235,14 +235,14 @@ nix --experimental-features \
 #+RESULTS: nix-search-json
 #+begin_example
 {
-  "legacyPackages.aarch64-darwin.ci": {
-    "description": "",
-    "pname": "nix-project-ci",
+  "packages.aarch64-darwin.nix-scaffold": {
+    "description": "Script to scaffold a Nix project",
+    "pname": "nix-scaffold",
     "version": ""
   },
-  "legacyPackages.x86_64-darwin.ci": {
-    "description": "",
-    "pname": "nix-project-ci",
+  "packages.aarch64-darwin.org2gfm": {
+    "description": "Script to export Org-mode files to GitHub Flavored Markdown (GFM)",
+    "pname": "org2gfm",
 …
 #+end_example
 
@@ -557,6 +557,7 @@ nix-env --profile /tmp/nix-profile \
 
 #+RESULTS: nix-env-install
 : installing 'org2gfm'
+: building '/nix/store/hs9xz17vlb2m4qn6kxfmccgjq4jyrvqg-user-environment.drv'...
 
 We can see this installation by querying what's been installed: