Update README

README.md

@@ -4,28 +4,34 @@ This Nix derivation provides an attribute set with each package referenced by it
 
 ## Quick try
 
-To quickly try a package `${PACKAGE_NAME}` from this repository, you can issue on the command line :
+To quickly try a package `${PACKAGE_NAME}` from the latest version of this repository, you can issue on the command line :
 
 ```bash
-nix-env -f 'https://git.marvid.fr/Tissevert/mynixpkgs/archive/0.1.1.tar.gz' -i ${PACKAGE_NAME}
+nix-env -f 'https://git.marvid.fr/Tissevert/mynixpkgs/archive/main.tar.gz' -i ${PACKAGE_NAME}
+```
+
+It's easy to pin a precise version by replacing `main` by the tag your interested in like so :
+
+```bash
+nix-env -f 'https://git.marvid.fr/Tissevert/mynixpkgs/archive/0.1.2.tar.gz' -i ${PACKAGE_NAME}
 ```
 
 ## Declarative setup
 
-To use this repository in a more reproducible and less imperative way, you can include the following snippet it in your `/etc/nixos/configuration.nix` or anywhere else you please :
+To use this repository declaratively from within a nix expression (say, in your `/etc/nixos/configuration.nix`) instead of from the command line, you can include the following snippet :
 
 ```nix
 let
   tissevertpkgs = import (
-    fetchTarball https://git.marvid.fr/Tissevert/mynixpkgs/archive/0.1.1.tar.gz
+    fetchTarball https://git.marvid.fr/Tissevert/mynixpkgs/archive/main.tar.gz
   ) {};
 in
 ```
 
-Then, anywhere where you select packages like for instance in `environment.systemPackages` or in your `users.users.<name>.packages` my packages are available within the attribute set `tissevertpkgs` like this for instance :
+Then, anywhere where you select packages, for instance in `environment.systemPackages` or in your `users.users.<name>.packages`, my packages are available within the attribute set `tissevertpkgs` like this for instance :
 
 ```nix
-packages = [ pkgs.git pkgs.vim tissevertpkgs.SJW ]
+packages = [ tissevertpkgs.SJW ]
 ```
 
 ## Current package selection

default.nix

@@ -3,8 +3,8 @@ builtins.intersectAttrs {hablo = 1; SJW = 1;} (pkgs.haskellPackages.override {
   overrides = self: super: {
     hablo = self.callPackage (
       { mkDerivation, aeson, base, bytestring, Cabal, containers
-      , directory, filepath, lucid, mtl, optparse-applicative, parsec
-      , SJW, stdenv, template, text, time, unix
+      , directory, filepath, lib, lucid, mtl, optparse-applicative
+      , parsec, SJW, template, text, time, unix
       }:
       mkDerivation {
         pname = "hablo";
@@ -26,12 +26,12 @@ builtins.intersectAttrs {hablo = 1; SJW = 1;} (pkgs.haskellPackages.override {
         ];
         homepage = "https://git.marvid.fr/Tissevert/hablo";
         description = "A minimalist static blog generator";
-        license = stdenv.lib.licenses.bsd3;
+        license = lib.licenses.bsd3;
       }
     ) {};
     SJW = self.callPackage (
       { mkDerivation, attoparsec, base, Cabal, containers, directory
-      , filepath, mtl, optparse-applicative, random, stdenv, text, time
+      , filepath, lib, mtl, optparse-applicative, random, text, time
       , unix
       }:
       mkDerivation {
@@ -54,7 +54,7 @@ builtins.intersectAttrs {hablo = 1; SJW = 1;} (pkgs.haskellPackages.override {
         benchmarkHaskellDepends = [ base directory filepath random time ];
         homepage = "https://git.marvid.fr/Tissevert/SJW";
         description = "The Simple Javascript Wrench is a very simple tool to pack several JS «modules» into a single script";
-        license = stdenv.lib.licenses.bsd3;
+        license = lib.licenses.bsd3;
       }
     ) {};
   };