Make minor changes and rephrasings

Signed-off-by: George Kaklamanos <gkaklas@gkaklas.gr>

README.md

@@ -12,7 +12,7 @@ When installed independently, it doesn't interfere with the system's package man
 It allows for creating *reproducible* environments. This means that once someone creates a development environment, its configuration can be shared with other developers on the team, and have it work exactly the same way!
 
 This has multiple benefits:
-* Each developer doesn't need to struggle with installing every package one-by-one from their distribution's repositories, take care of incompatible versions, missing packages, add third-party repositories (e.g PPAs for Ubuntu), etc
+* Not every developer needs to struggle with installing every package from their distribution's repositories one-by-one, take care of incompatible versions, missing packages, add third-party repositories (e.g PPAs for Ubuntu), etc
 * Easy on-boarding: new contributors can start working right away!
 
 ## Why not...
@@ -23,7 +23,7 @@ This has multiple benefits:
     * Nix references packages not only by version, but also by the hash of its contents, and one can also even reference the `nixpkgs` repository's snapshot at a specific point in time (it's a git repository == commit!). This also means that multiple versions of the same package can be installed at the same time.
   * Inconvenient for everyday use: A large image will take a few seconds to start; the user needs to mount every directory needed as volumes; UID, file permissions and ownership inconsistencies; the user's system's familiar shell configuration, aliases, and utilities, are not available inside the container, etc
 * `pip`:
-  * Is language-specific; nix can manage *everything*, so the way it is used across e.g. an organization would be more uniform and familiar across projects
+  * Is language-specific; nix can manage *everything*, so the way it is used across multiple projects would be more uniform and familiar, both for developers working in multiple projects and for groups
   * It isn't able to install system utilities, compilers, etc (which some pypi packages need during installation!)
 * `chroot`/`lxc` containers
   * Harder to use for a development workflow
@@ -36,26 +36,26 @@ This has multiple benefits:
 
 The [recommended way](https://nixos.org/download/#download-nix) is:
 
-```sh
+```fish
 sh <(curl --proto '=https' --tlsv1.2 -L https://nixos.org/nix/install) --daemon
 ```
 
 If you encounter any issues during installation, for example if your Linux distribution uses SELinux, you can try the single-user installation:
 
-```sh
+```fish
 sh <(curl --proto '=https' --tlsv1.2 -L https://nixos.org/nix/install) --no-daemon
 ```
 
 or [Determinate nix](https://docs.determinate.systems/), a nix distribution (!= Linux distribution):
 
-```sh
+```fish
 curl -fsSL https://install.determinate.systems/nix | sh -s -- install --determinate
 ```
 
 ### `devbox`
 As using nix by its own can be daunting for new users, we can use [devbox](https://jetify-com.vercel.app/docs/devbox/) (think of it as a wrapper for nix, which can be used like python/pip but for any package we need!)
 
-```sh
+```fish
 nix profile install nixpkgs#devbox
 ```
 
@@ -63,14 +63,14 @@ nix profile install nixpkgs#devbox
 
 To create a `devbox` configuration:
 
-```sh
+```fish
 cd project
 devbox init
 ```
 
-To manage your project's dependencies:
+To manage your project's build dependencies and tools:
 
-```sh
+```fish
 devbox add gcc@4.9.4
 devbox list
 devbox rm gcc
@@ -79,21 +79,21 @@ devbox add gcc
 
 You can search for packges on [nixhub](https://www.nixhub.io), or directly from the terminal:
 
-```sh
+```fish
 devbox search numpy
 devbox add python313Packages.numpy
 ```
 
 Then, enter the environment with:
 
-```sh
+```fish
 devbox shell
 ```
 
 `devbox` also supports various programming languages. For example, [Python](https://jetify-com.vercel.app/docs/devbox/devbox_examples/languages/python/):
 once you add it as a dependency, devbox will also manage and activate a Python virtual environment for you:
 
-```sh
+```fish
 devbox add python@3.6.12
 devbox add gcc git ipcalc
 devbox shell
@@ -101,11 +101,11 @@ pip install numpy
 pip install -r requirements.txt
 ```
 
-### Bonus use-cases
+### Bonus instructions
 
-[devbox](https://jetify-com.vercel.app/docs/devbox/ide_configuration/direnv/) can also be used with [direnv](https://direnv.net/#basic-installation):
+[devbox](https://jetify-com.vercel.app/docs/devbox/ide_configuration/direnv/) can also be used with [direnv](https://direnv.net/#basic-installation) (highly recommended!):
 
-```sh
+```fish
 nix profile install nixpkgs#direnv
 cd project
 devbox generate direnv
@@ -113,21 +113,21 @@ devbox generate direnv
 
 Then, after you also configure [your shell](https://direnv.net/docs/hook.html), the environment is activated automatically when you enter a project:
 
-```sh
+```fish
 cd project
 make
 ```
 
 You could also use `devbox` as a [general package manager](https://jetify-com.vercel.app/docs/devbox/devbox_global/), without needing to `devbox shell` in a project to keep software available:
 
-```sh
+```fish
 devbox global add ripgrep vim git
 devbox global list
 ```
 
 The same is possible with a nix command (although `devbox` might still seem easier for beginners):
 
-```sh
+```fish
 nix profile install nixpkgs#wget
 ```