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https://codeberg.org/mhwombat/nix-book.git
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temp
This commit is contained in:
Amy de Buitléir
parent
c25a0c2650
commit
e2aa713c19
7 changed files with 143 additions and 196 deletions
61
index.html
61
index.html
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@ -1900,7 +1900,7 @@ location of the executable, if we’re curious.</p>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ which hello-flake
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/nix/store/qskl8ajlgnl654fhgsmv74yv8x9r3kzg-hello-flake/bin/hello-flake</pre>
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/nix/store/y0i81pxnbrg8jpvqp886b4lrzh7wb0ni-hello-flake/bin/hello-flake</pre>
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</div>
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</div>
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<div class="paragraph">
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@ -1910,7 +1910,7 @@ directly available.</p>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ exit
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$ hello-flake # Won't work outside development shell
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$ hello-flake # Fails outside development shell
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bash: line 24: hello-flake: command not found</pre>
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</div>
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</div>
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@ -1921,7 +1921,7 @@ that the package remains in the store for future use.</p>
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ /nix/store/qskl8ajlgnl654fhgsmv74yv8x9r3kzg-hello-flake/bin/hello-flake
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<pre class="nowrap">$ /nix/store/y0i81pxnbrg8jpvqp886b4lrzh7wb0ni-hello-flake/bin/hello-flake
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Hello from your flake!</pre>
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</div>
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</div>
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@ -2825,7 +2825,7 @@ Here’s the modified <code>hello-flake</code> file.</p>
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ ./hello-flake # Won't work
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<pre class="nowrap">$ ./hello-flake # Fails
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./hello-flake: line 3: cowsay: command not found</pre>
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</div>
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</div>
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@ -2974,7 +2974,7 @@ $ exit</pre>
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ nix run # Won't work
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<pre class="nowrap">$ nix run # Fails
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warning: Git tree '/home/amy/codeberg/nix-book/source/modify-hello-flake/hello-flake' is dirty
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/nix/store/rnjqkk7a8sz6wrm1qb1hxssy7qlgaa85-hello-flake/bin/hello-flake: line 3: cowsay: command not found</pre>
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</div>
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@ -3172,7 +3172,7 @@ don’t need to <code>git push</code> the changes until we’re ready to
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ git commit hello-flake flake.nix -m 'added bovine feature'
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[main a10700e] added bovine feature
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[main cb77c4d] added bovine feature
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2 files changed, 13 insertions(+), 1 deletion(-)
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$ nix run
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________________________
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@ -3381,7 +3381,7 @@ You can come back to this section later to learn more.</p>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ nix shell nixpkgs#ghc
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$ runghc Main.hs # Won't work
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$ runghc Main.hs # Fails
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Main.hs:1:1: error: [GHC-87110]
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Could not find module ‘Network.HostName’.
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@ -3400,7 +3400,7 @@ Let’s exit that shell and try again, this time adding the <code>hostname</
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<div class="content">
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<pre class="nowrap">$ exit
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$ nix shell nixpkgs#ghc nixpkgs#hostname
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$ runghc Main.hs # Won't work
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$ runghc Main.hs # Fails
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Main.hs:1:1: error: [GHC-87110]
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Could not find module ‘Network.HostName’.
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@ -3423,7 +3423,7 @@ The package we want is in the <em>package set</em> called <code>haskellPackages<
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<div class="content">
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<pre class="nowrap">$ exit
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$ nix shell nixpkgs#ghc nixpkgs#haskellPackages.hostname
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$ runghc Main.hs # Won't work
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$ runghc Main.hs # Fails
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Main.hs:1:1: error: [GHC-87110]
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Could not find module ‘Network.HostName’.
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@ -3770,7 +3770,7 @@ warning: creating lock file '"/home/amy/codeberg/nix-book/source/new-flake/haske
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• Added input 'haskell-flake':
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'github:srid/haskell-flake/2acbf1c9bb7aac38b59dcc3c1bd78911cf37e42c?narHash=sha256-jwZT6Ns4BXlrFHaXjZgZwfhSaw8nTCTKZ8fCDylrONM%3D' (2025-09-14)
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• Added input 'nixpkgs':
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'github:nixos/nixpkgs/6d7ec06d6868ac6d94c371458fc2391ded9ff13d?narHash=sha256-fEvTiU4s9lWgW7mYEU/1QUPirgkn%2BodUBTaindgiziY%3D' (2025-09-13)
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'github:nixos/nixpkgs/88cef159e47c0dc56f151593e044453a39a6e547?narHash=sha256-kYhNxLlYyJcUouNRazBufVfBInMWMyF%2B44xG/xar2yE%3D' (2025-09-14)
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warning: Git tree '/home/amy/codeberg/nix-book/source/new-flake/haskell-flake/hello-haskell' is dirty</pre>
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</div>
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</div>
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@ -3788,6 +3788,11 @@ The important thing for now is that the build succeeded.</p>
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<div class="content">
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<pre class="nowrap">$ nix run
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warning: Git tree '/home/amy/codeberg/nix-book/source/new-flake/haskell-flake/hello-haskell' is dirty
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these 2 derivations will be built:
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/nix/store/b67dd3m503q30yiwfgav3xzz88bb91h4-hello-flake-haskell-source-1.0.0.drv
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/nix/store/bgjyjh7282728b2qff37ldygg80zk4m1-hello-flake-haskell-1.0.0.drv
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building '/nix/store/b67dd3m503q30yiwfgav3xzz88bb91h4-hello-flake-haskell-source-1.0.0.drv'...
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building '/nix/store/bgjyjh7282728b2qff37ldygg80zk4m1-hello-flake-haskell-1.0.0.drv'...
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Hello from Haskell inside a Nix flake!
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Your hostname is: wombat11k</pre>
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</div>
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@ -3807,7 +3812,7 @@ We need to add this to the repo, and commit all important files.</p>
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<div class="content">
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<pre class="nowrap">$ git add flake.lock
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$ git commit -a -m 'initial commit'
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[master (root-commit) d35f8fd] initial commit
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[master (root-commit) c64c57a] initial commit
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5 files changed, 170 insertions(+)
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create mode 100644 LICENSE
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create mode 100644 Main.hs
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@ -4009,7 +4014,7 @@ First we’ll try building the package manually.
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ python -m build # Won't work
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<pre class="nowrap">$ python -m build # Fails
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/nix/store/iyff8129iampdw13nlfqalzhxy8y1hi9-python3-3.13.6/bin/python: No module named build</pre>
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</div>
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</div>
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@ -4212,7 +4217,7 @@ something like this.</p>
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ nix build # Won't work
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<pre class="nowrap">$ nix build # Fails
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error: Path 'flake.nix' in the repository "/home/amy/codeberg/nix-book/source/new-flake/python-flake/hello-python" is not tracked by Git.
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To make it visible to Nix, run:
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@ -4236,7 +4241,7 @@ warning: creating lock file '"/home/amy/codeberg/nix-book/source/new-flake/pytho
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• Added input 'flake-utils/systems':
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'github:nix-systems/default/da67096a3b9bf56a91d16901293e51ba5b49a27e?narHash=sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768%3D' (2023-04-09)
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• Added input 'nixpkgs':
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'github:NixOS/nixpkgs/5ad881b15fb2b63c2f127533ca59f840fcc24c3f?narHash=sha256-P8XdKg87fR5PpCjIgMH%2B05PDwhdmlNrigsvChdHfyaw%3D' (2025-09-14)
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'github:NixOS/nixpkgs/dd16e0b60390586a261a4e28fc180a91212fe010?narHash=sha256-yM1FFsRiyESij/lzbdBMCUoFOKMoShHu0CAexnBWzTM%3D' (2025-09-15)
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warning: Git tree '/home/amy/codeberg/nix-book/source/new-flake/python-flake/hello-python' is dirty</pre>
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</div>
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</div>
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@ -4254,6 +4259,9 @@ The important thing for now is that the build succeeded.</p>
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<div class="content">
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<pre class="nowrap">$ nix run
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warning: Git tree '/home/amy/codeberg/nix-book/source/new-flake/python-flake/hello-python' is dirty
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this derivation will be built:
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/nix/store/kr0aywqsm9v8ds4mc909iaan2yaqmjq3-hello-flake-python.drv
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building '/nix/store/kr0aywqsm9v8ds4mc909iaan2yaqmjq3-hello-flake-python.drv'...
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Hello from inside a Python program built with a Nix flake!</pre>
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</div>
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</div>
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@ -4272,7 +4280,7 @@ We need to add this to the repo, and commit all important files.</p>
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<div class="content">
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<pre class="nowrap">$ git add flake.lock
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$ git commit -a -m 'initial commit'
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[master (root-commit) 2af9bd5] initial commit
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[master (root-commit) deac9ed] initial commit
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4 files changed, 127 insertions(+)
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create mode 100644 flake.lock
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create mode 100644 flake.nix
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@ -4655,7 +4663,7 @@ sanitized: <strong>some text</strong></pre>
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ cowsay "Moo!" # Won't work; dependency not available
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<pre class="nowrap">$ cowsay "Moo!" # Fails; dependency not available
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bash: line 17: cowsay: command not found
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$ nix develop
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$ cowsay "Moo!" # Works in development environment
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@ -4780,7 +4788,7 @@ we see that this flake provides both a package and an app called <code>hello</co
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ hello-flake # Won't work; dependency not available
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<pre class="nowrap">$ hello-flake # Fails; dependency not available
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bash: line 40: hello-flake: command not found
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$ nix develop
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$ hello-flake # Works in development environment
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@ -4885,18 +4893,23 @@ together with the <em>high-level workflow</em> described in <a href="#_developme
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</div>
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<div class="literalblock">
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<div class="content">
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<pre class="nowrap">$ runghc Main.hs # Won't work; dependency not available
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<pre class="nowrap">$ runghc Main.hs # Fails; dependency not available
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Main.hs:1:1: error: [GHC-87110]
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Could not find module ‘Data.List.Extra’.
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Could not find module ‘Text.Pandoc.Filters.Columns’.
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Use :set -v to see a list of the files searched for.
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1 | import Data.List.Extra
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| ^^^^^^^^^^^^^^^^^^^^^^
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1 | import Text.Pandoc.Filters.Columns
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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$ nix develop
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$ runghc Main.hs # Works in development environemnt
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"abcde"
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"XYZ"</pre>
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Main.hs:1:1: error: [GHC-87110]
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Could not find module ‘Text.Pandoc.Filters.Columns’.
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Use :set -v to see a list of the files searched for.
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1 | import Text.Pandoc.Filters.Columns
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^</pre>
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</div>
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</div>
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</div>
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@ -5461,7 +5474,7 @@ Hello from your flake!</pre>
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</div>
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<div id="footer">
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<div id="footer-text">
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Last updated 2025-09-15 14:41:47 IST
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Last updated 2025-09-15 14:48:12 IST
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</div>
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</div>
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</body>
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